Duplex, M. (1990). Mystery on colton`s island. Pacific Press.
Cita Chicago (17th ed.)Duplex, Mary. Mystery on Colton`s Island. Boise, ID: Pacific Press, 1990.
Cita MLA (9th ed.)Duplex, Mary. Mystery on Colton`s Island. Pacific Press, 1990.
Atenció: Aquestes cites poden no estar 100% correctes.