Cita APA (7th ed.)

Zey, R. L., & Linstromberg, W. W. (1974). Problems and solutions. D.C. Heath.

Cita Chicago (17th ed.)

Zey, Robert L., i Walter William Linstromberg. Problems and Solutions. Lexington: D.C. Heath, 1974.

Cita MLA (9th ed.)

Zey, Robert L., i Walter William Linstromberg. Problems and Solutions. D.C. Heath, 1974.