Cita APA (7a ed.)

Stone, A., & Gulvin, H. (1967). Machines for power farming (2nd edition.). John Wiley & Sons.

Cita Chicago Style (17a ed.)

Stone, A.A, y H.E Gulvin. Machines for Power Farming. 2nd edition. New York: John Wiley & Sons, 1967.

Cita MLA (8a ed.)

Stone, A.A, y H.E Gulvin. Machines for Power Farming. 2nd edition. John Wiley & Sons, 1967.