Não informado. (1972). AIBS Education Review. American Institute of Biological Sciences.
Chicago-referens (17:e uppl.)Não informado. AIBS Education Review. Washington: American Institute of Biological Sciences, 1972.
MLA-referens (8:e uppl.)Não informado. AIBS Education Review. American Institute of Biological Sciences, 1972.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.