Citazione Stile APA (7a Edizione)

Shaner, W. W., Philipp, P. F., & Schmehl, W. R. (1982). Farming systems research and development: Guidelines for developing countries. Westview Press.

Citazione stile Chigago Style (17a edizione)

Shaner, W. W., P. F. Philipp, e W. R. Schmehl. Farming Systems Research and Development: Guidelines for Developing Countries. Boulder, Colo: Westview Press, 1982.

Citatione MLA (9a ed.)

Shaner, W. W., et al. Farming Systems Research and Development: Guidelines for Developing Countries. Westview Press, 1982.