APA (7th ed.) Citation

Walker, F. (1869). Characters of undescribed Lepidoptera Heterocera. E.W. Janson.

Chicago Style (17th ed.) Citation

Walker, Francis. Characters of Undescribed Lepidoptera Heterocera. London: E.W. Janson, 1869.

MLA (9th ed.) Citation

Walker, Francis. Characters of Undescribed Lepidoptera Heterocera. E.W. Janson, 1869.

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