APA (7th ed.) Citation

Briggs, R. (2000). The snowman. Hamilton [u.a.].

Chicago Style (17th ed.) Citation

Briggs, Raymond. The Snowman. London [u.a.]: Hamilton [u.a.], 2000.

MLA (9th ed.) Citation

Briggs, Raymond. The Snowman. Hamilton [u.a.], 2000.