APA Style

Hardin, Garrett. (1949). Biology: its human implications . San Fransisco: W.H. freeman.

Chicago Style

Hardin, Garrett. Biology: its human implications. San Fransisco: W.H. freeman, 1949. Buku Teks.

MLA Style

Hardin, Garrett. Biology: its human implications. San Fransisco: W.H. freeman, 1949. Buku Teks.

Turabian Style

Hardin, Garrett. Biology: its human implications. San Fransisco: W.H. freeman, 1949. Buku Teks.