APA (7th ed.) Citation

SMITH, R. L. Elements of ecology. Harper & Row Publ.

Chicago Style (17th ed.) Citation

SMITH, ROBERT LEO. Elements of Ecology. Harper & Row Publ.

MLA (8th ed.) Citation

SMITH, ROBERT LEO. Elements of Ecology. Harper & Row Publ.

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