Cita APA (7a ed.)

Wilson, K., & Segal, J. (2006). Sleepyhead. Margaret K. McElderry Books.

Cita Chicago Style (17a ed.)

Wilson, Karma, y John Segal. Sleepyhead. New York: Margaret K. McElderry Books, 2006.

Cita MLA (8a ed.)

Wilson, Karma, y John Segal. Sleepyhead. Margaret K. McElderry Books, 2006.