APA (7th ed.) Citation
Shelford, V. E. (1963). The Ecology of North America. Univ. of Illinois Pr.
Chicago Style (17th ed.) Citation
Shelford, Victor Ernest. The Ecology of North America. Urbana: Univ. of Illinois Pr, 1963.
MLA (9th ed.) Citation
Shelford, Victor Ernest. The Ecology of North America. Univ. of Illinois Pr, 1963.
Warning: These citations may not always be 100% accurate.