Cita APA (7a ed.)

Pilcher, R. (1989). The shell seekers. A Dell Book.

Cita Chicago Style (17a ed.)

Pilcher, Rosamunde. The Shell Seekers. New York: A Dell Book, 1989.

Cita MLA (9a ed.)

Pilcher, Rosamunde. The Shell Seekers. A Dell Book, 1989.