Cita APA (7a ed.)

Wrenn, C. G., & Dugan, W. E. (1950). Guidance procedures in high school: Some recommended procedures based upon a survey of present practices in Minnesota. University of Minnesota Press.

Cita Chicago Style (17a ed.)

Wrenn, C. Gilbert, y Willis E. Dugan. Guidance Procedures in High School: Some Recommended Procedures Based upon a Survey of Present Practices in Minnesota. Minneapolis: University of Minnesota Press, 1950.

Cita MLA (8a ed.)

Wrenn, C. Gilbert, y Willis E. Dugan. Guidance Procedures in High School: Some Recommended Procedures Based upon a Survey of Present Practices in Minnesota. University of Minnesota Press, 1950.