Cita APA (7th ed.)

Briggs, R. (1978). The snowman (1st American ed.). Random House.

Cita Chicago (17th ed.)

Briggs, Raymond. The Snowman. 1st American ed. New York: Random House, 1978.

Cita MLA (8th ed.)

Briggs, Raymond. The Snowman. 1st American ed. Random House, 1978.