Cita APA (7th ed.)

Clarkson, D. M., & Gamble, A. (1980). General mathematics: Teacher's guide. American Book.

Cita Chicago (17th ed.)

Clarkson, David M., i Andy Gamble. General Mathematics: Teacher's Guide. New York: American Book, 1980.

Cita MLA (9th ed.)

Clarkson, David M., i Andy Gamble. General Mathematics: Teacher's Guide. American Book, 1980.