APA (7th ed.) Citation

Eifrig, C. W. G. (1911). The Birds of Ottawa, continued. Zenodo.

Chicago Style (17th ed.) Citation

Eifrig, Charles William Gustav. The Birds of Ottawa, Continued. Zenodo, 1911.

MLA (9th ed.) Citation

Eifrig, Charles William Gustav. The Birds of Ottawa, Continued. Zenodo, 1911.

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