Cita APA (7th ed.)

Clark, V. A. (1968). Preparation for basic statistics. McGraw-Hill.

Cita Chicago (17th ed.)

Clark, Virgenia A. Preparation for Basic Statistics. N.Y: McGraw-Hill, 1968.

Cita MLA (9th ed.)

Clark, Virgenia A. Preparation for Basic Statistics. McGraw-Hill, 1968.