Cita APA (7a ed.)

Licks, H. E. (1931). Recreations in mathematics (6a ed.). D. Van Nostrand Company.

Cita Chicago Style (17a ed.)

Licks, H. E. Recreations in Mathematics. 6a ed. New York: D. Van Nostrand Company, 1931.

Cita MLA (8a ed.)

Licks, H. E. Recreations in Mathematics. 6a ed. D. Van Nostrand Company, 1931.