Cita APA (7th ed.)

Bickham, G., & Hofer, P. (1954). The universal penman. Dover.

Cita Chicago (17th ed.)

Bickham, George, i Philip Hofer. The Universal Penman. Nueva York: Dover, 1954.

Cita MLA (9th ed.)

Bickham, George, i Philip Hofer. The Universal Penman. Dover, 1954.