APA (7th ed.) Citation

Risdon, D. H. S., & Grasselli, A. (1974). Song birds. Crescent Books.

Chicago Style (17th ed.) Citation

Risdon, Donald Herbert Shier, and Armando Grasselli. Song Birds. [New York]: Crescent Books, 1974.

MLA (9th ed.) Citation

Risdon, Donald Herbert Shier, and Armando Grasselli. Song Birds. Crescent Books, 1974.