Cita APA (7a ed.)

Emerton, J. H., & Frost, S. W. (1961). The common spiders of the United States. Dover.

Cita Chicago Style (17a ed.)

Emerton, James H., y S. W. Frost. The Common Spiders of the United States. New York: Dover, 1961.

Cita MLA (8a ed.)

Emerton, James H., y S. W. Frost. The Common Spiders of the United States. Dover, 1961.