APA (7th ed.) Citation

Shelford, V. E. (1963). The ecology of North America. The University of Illinois.

Chicago Style (17th ed.) Citation

Shelford, Victor E. The Ecology of North America. Urbana: The University of Illinois, 1963.

MLA (9th ed.) Citation

Shelford, Victor E. The Ecology of North America. The University of Illinois, 1963.

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