APA (7th ed.) Zitazioa

SPERLING, A. a. S. (1967). Mathematics made simple. W.H.Allen.

Chicago Style (17th ed.) Zitazioa

SPERLING, Abraham and STUART. Mathematics Made Simple. London: W.H.Allen, 1967.

MLA (9th ed.) Zitazioa

SPERLING, Abraham and STUART. Mathematics Made Simple. W.H.Allen, 1967.