Maton, Anthea· Jean Hopkins· Charles William McLaughlin· Susan Johnson· Maryanna Quon Warner· David LaHart· Jill D. Wright (1993). Human Biology and Health. Englewood Cliffs, New Jersey, USA: Prentice Hall. ISBN0-13-981176-1. OCLC32308337.
Maton, Anthea· Jean Hopkins· Charles William McLaughlin· Susan Johnson· Maryanna Quon Warner· David LaHart· Jill D. Wright (1993). Human Biology and Health. Englewood Cliffs, New Jersey, USA: Prentice Hall. ISBN0-13-981176-1. OCLC32308337.