Cita APA

Clark, M. L., & Clark, M. L. (1957). Long, long ago. New York, New York: Pageant Press.

Citación estilo Chicago

Clark, Mary Lou, y Mary Lou Clark. Long, Long Ago. New York, New York: Pageant Press, 1957.

Cita MLA

Clark, Mary Lou, y Mary Lou Clark. Long, Long Ago. New York, New York: Pageant Press, 1957.