Cita APA (7th ed.)

Stoops, E., & Wahlquist, G. L. (1958). Principles and practices in guidance. McGraw-Hill.

Cita Chicago (17th ed.)

Stoops, Emery, i Gunnar L. Wahlquist. Principles and Practices in Guidance. Nueva York: McGraw-Hill, 1958.

Cita MLA (9th ed.)

Stoops, Emery, i Gunnar L. Wahlquist. Principles and Practices in Guidance. McGraw-Hill, 1958.