APA

Burch J. B., . (1962). How to know the eastern land snails: pictured-keys for determining the land snails of the United States occurring east of the Rocky Mountain Divide. Dubuque, Iowa: W. C. Brown Co.

Chicago

Burch J B, . 1962. How to know the eastern land snails: pictured-keys for determining the land snails of the United States occurring east of the Rocky Mountain Divide. Dubuque, Iowa: W. C. Brown Co.

Harvard

Burch J. B., . (1962). How to know the eastern land snails: pictured-keys for determining the land snails of the United States occurring east of the Rocky Mountain Divide. Dubuque, Iowa: W. C. Brown Co.

MLA

Burch J B, . How to know the eastern land snails: pictured-keys for determining the land snails of the United States occurring east of the Rocky Mountain Divide. Dubuque, Iowa: W. C. Brown Co. 1962.