APA-referens (7:e uppl.)

Oram, R. F. (1973). Biology: Living systems (Teacher's annotated ed., including behavioral objectives.). Merrill.

Chicago-referens (17:e uppl.)

Oram, Raymond F. Biology: Living Systems. Teacher's annotated ed., including behavioral objectives. Columbus, Ohio: Merrill, 1973.

MLA-referens (8:e uppl.)

Oram, Raymond F. Biology: Living Systems. Teacher's annotated ed., including behavioral objectives. Merrill, 1973.