Cita APA (7a ed.)

Doveton, J., Guy, B., Watney, L., & Bhattacharya, S. (1998). Pfeffer 2.0 manual. Kansas Geological Survey.

Cita Chicago Style (17a ed.)

Doveton, John, Bill Guy, Lynn Watney, y Saibal Bhattacharya. Pfeffer 2.0 Manual. Kansas: Kansas Geological Survey, 1998.

Cita MLA (8a ed.)

Doveton, John, et al. Pfeffer 2.0 Manual. Kansas Geological Survey, 1998.