Cita APA (7a ed.)

Thomas, C., Fisher, G., & Reeve, A. (1991). Milk from grass (2nd edition.). BGS.

Cita Chicago Style (17a ed.)

Thomas, C., G.E.J Fisher, y A. Reeve. Milk from Grass. 2nd edition. Cleveland: BGS, 1991.

Cita MLA (8a ed.)

Thomas, C., et al. Milk from Grass. 2nd edition. BGS, 1991.