APA (7th ed.) Citation

Richardson, F. (1942). Adaptive modifications for tree-trunk foraging in birds. University of California press.

Chicago Style (17th ed.) Citation

Richardson, Frank. Adaptive Modifications for Tree-trunk Foraging in Birds. Berkeley: University of California press, 1942.

MLA (9th ed.) Citation

Richardson, Frank. Adaptive Modifications for Tree-trunk Foraging in Birds. University of California press, 1942.