Cita APA (7th ed.)
Crowhurst, N. H. (1961). Basic mathematics (1a. ed.). John F. Rider Pushing INC..
Cita Chicago (17th ed.)
Crowhurst, Norman H. Basic Mathematics. 1a. ed. Nueva York: John F. Rider Pushing INC., 1961.
Cita MLA (9th ed.)
Crowhurst, Norman H. Basic Mathematics. 1a. ed. John F. Rider Pushing INC., 1961.
Atenció: Aquestes cites poden no estar 100% correctes.