Henkes, K. (1989). Shhhh. Greenwillow Books.
Cita Chicago (17th ed.)Henkes, Kevin. Shhhh. New York: Greenwillow Books, 1989.
Cita MLA (8th ed.)Henkes, Kevin. Shhhh. Greenwillow Books, 1989.
Atenció: Aquestes cites poden no estar 100% correctes.
Henkes, K. (1989). Shhhh. Greenwillow Books.
Cita Chicago (17th ed.)Henkes, Kevin. Shhhh. New York: Greenwillow Books, 1989.
Cita MLA (8th ed.)Henkes, Kevin. Shhhh. Greenwillow Books, 1989.