Cita APA (7th ed.)

Parker, B. M. (1941). Spiders. Row, Peterson and Company.

Cita Chicago (17th ed.)

Parker, Bertha Morris. Spiders. New York: Row, Peterson and Company, 1941.

Cita MLA (9th ed.)

Parker, Bertha Morris. Spiders. Row, Peterson and Company, 1941.