APA Edition Citation

Gerking, S. D. (1969). Biological systems. W H saunders and co.

Chicago Edition Citation

Gerking, S D. Biological Systems. London: W H saunders and co, 1969.

MLA Edition Citation

Gerking, S D. Biological Systems. W H saunders and co, 1969.

Warning: These citations may not always be 100% accurate.