APA (7th ed.) Citation

Smallwood, W. L., & Green, E. R. (1968). Biology. Silver Burdett.

Chicago Style (17th ed.) Citation

Smallwood, William L., and Edna R. Green. Biology. Morristown, New Jersey [etc.]: Silver Burdett, 1968.

MLA (9th ed.) Citation

Smallwood, William L., and Edna R. Green. Biology. Silver Burdett, 1968.