APA način citiranja (7. izdanje)

Clapp, F. L., & Huebner, B. P. (1924). The number combinations, their relative difficulty and the frequency of their appearance in text-books.

Čikaški stil citiranja (17. izdanje)

Clapp, Frank L., i Bernard P. Huebner. The Number Combinations, Their Relative Difficulty and the Frequency of Their Appearance in Text-books. Madison, Wis, 1924.

MLA način citiranja (8. izdanje)

Clapp, Frank L., i Bernard P. Huebner. The Number Combinations, Their Relative Difficulty and the Frequency of Their Appearance in Text-books. 1924.