APA (7th ed.) Citation

Ecological Society of America & Shelford, V. E. (1926). Naturalist's guide to the Americas. The Williams & Wilkins company.

Chicago Style (17th ed.) Citation

Ecological Society of America and Victor E. Shelford. Naturalist's Guide to the Americas. Baltimore: The Williams & Wilkins company, 1926.

MLA (9th ed.) Citation

Ecological Society of America and Victor E. Shelford. Naturalist's Guide to the Americas. The Williams & Wilkins company, 1926.