APA (7th ed.) Citation

Heimler, C. H., & Lockard, J. D. (1981). Focus on life science. Merrill.

Chicago Style (17th ed.) Citation

Heimler, Cahrles H., and J. David Lockard. Focus on Life Science. Columbus, OH: Merrill, 1981.

MLA (9th ed.) Citation

Heimler, Cahrles H., and J. David Lockard. Focus on Life Science. Merrill, 1981.