Cite

Snowy owl, Strix nyctea. Linn, male, 1. Female, 2. pl. 121., no. 25

MLA

Havell, Robert, 1793-1878. Snowy owl, Strix nyctea. Linn, male, 1. Female, 2. pl. 121., no. 25. https://collections.library.yale.edu/catalog/2014416.

APA, 6th edition

Havell, Robert, 1793-1878. [Snowy owl, Strix nyctea. Linn, male, 1. Female, 2. pl. 121., no. 25]. https://collections.library.yale.edu/catalog/2014416.