Cita APA

Hopkins, M., & Hopkins, M. (1967). The three visitors. New York, New York: Parents Magazine Press.

Citación estilo Chicago

Hopkins, Marjorie, y Marjorie Hopkins. The Three Visitors. New York, New York: Parents Magazine Press, 1967.

Cita MLA

Hopkins, Marjorie, y Marjorie Hopkins. The Three Visitors. New York, New York: Parents Magazine Press, 1967.