Maton, Anthea; Jean Hopkins; Charles William McLaughlin; Susan Johnson; Maryanna Quon Warner; David LaHart; Jill D. Wright (1993). Human Biology and Health. Englewood Cliffs, NJ: Prentice Hall. ISBN978-0-13-981176-0. OCLC32308337.
nih.gov
ghr.nlm.nih.gov
»Genetics Home Reference«. US National Library of Medicine. US National Institutes of Health. Pridobljeno 27. junija 2015.
Maton, Anthea; Jean Hopkins; Charles William McLaughlin; Susan Johnson; Maryanna Quon Warner; David LaHart; Jill D. Wright (1993). Human Biology and Health. Englewood Cliffs, NJ: Prentice Hall. ISBN978-0-13-981176-0. OCLC32308337.