Cita APA (7a ed.)

Wellman, L. B. (1957). Problem layouts for technical descriptive geometry. McGgraw-Hill.

Cita Chicago Style (17a ed.)

Wellman, Leighton B. Problem Layouts for Technical Descriptive Geometry. Nueva York: McGgraw-Hill, 1957.

Cita MLA (8a ed.)

Wellman, Leighton B. Problem Layouts for Technical Descriptive Geometry. McGgraw-Hill, 1957.