The butterfly book : a popular guide to a knowledge of the butterflies of North America
MLA
Holland, W. J. The Butterfly Book: a Popular Guide to a Knowledge of the Butterflies of North America. Garden City, N.Y.: Doubleday, Page, 1920
APA, 7th edition
Holland, W. J. (1920). The butterfly book: a popular guide to a knowledge of the butterflies of North America. Garden City, N.Y.: Doubleday, Page
Chicago, 17th edition
Holland, W. J. The butterfly book: a popular guide to a knowledge of the butterflies of North America. Garden City, N.Y.: Doubleday, Page, 1920