AILSA ALLABY and MICHAEL ALLABY "amb ." A Dictionary of Earth Sciences. . Encyclopedia.com. (July 10, 2020). https://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/amb

AILSA ALLABY and MICHAEL ALLABY "amb ." A Dictionary of Earth Sciences. . Retrieved July 10, 2020 from Encyclopedia.com: https://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/amb

MICHAEL ALLABY "amb ." A Dictionary of Zoology. . Encyclopedia.com. (July 10, 2020). https://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/amb-0

MICHAEL ALLABY "amb ." A Dictionary of Zoology. . Retrieved July 10, 2020 from Encyclopedia.com: https://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/amb-0

FRAN ALEXANDER , PETER BLAIR , JOHN DAINTITH , ALICE GRANDISON , VALERIE ILLINGWORTH , ELIZABETH MARTIN , ANNE STIBBS , JUDY PEARSALL , and SARA TULLOCH "AMB ." The Oxford Dictionary of Abbreviations. . Encyclopedia.com. (July 10, 2020). https://www.encyclopedia.com/humanities/dictionaries-thesauruses-pictures-and-press-releases/amb

FRAN ALEXANDER , PETER BLAIR , JOHN DAINTITH , ALICE GRANDISON , VALERIE ILLINGWORTH , ELIZABETH MARTIN , ANNE STIBBS , JUDY PEARSALL , and SARA TULLOCH "AMB ." The Oxford Dictionary of Abbreviations. . Retrieved July 10, 2020 from Encyclopedia.com: https://www.encyclopedia.com/humanities/dictionaries-thesauruses-pictures-and-press-releases/amb

FRAN ALEXANDER , PETER BLAIR , JOHN DAINTITH , ALICE GRANDISON , VALERIE ILLINGWORTH , ELIZABETH MARTIN , ANNE STIBBS , JUDY PEARSALL , and SARA TULLOCH "Amb. ." The Oxford Dictionary of Abbreviations. . Encyclopedia.com. (July 10, 2020). https://www.encyclopedia.com/humanities/dictionaries-thesauruses-pictures-and-press-releases/amb-0

FRAN ALEXANDER , PETER BLAIR , JOHN DAINTITH , ALICE GRANDISON , VALERIE ILLINGWORTH , ELIZABETH MARTIN , ANNE STIBBS , JUDY PEARSALL , and SARA TULLOCH "Amb. ." The Oxford Dictionary of Abbreviations. . Retrieved July 10, 2020 from Encyclopedia.com: https://www.encyclopedia.com/humanities/dictionaries-thesauruses-pictures-and-press-releases/amb-0