Citazione Stile APA (7a Edizione)

Solberg, E. D. (1958). The why and how of rural zoning. U.S. Dept. of Agriculture.

Citazione stile Chigago Style (17a edizione)

Solberg, Erling D. The Why and How of Rural Zoning. Washington, D.C: U.S. Dept. of Agriculture, 1958.

Citatione MLA (9a ed.)

Solberg, Erling D. The Why and How of Rural Zoning. U.S. Dept. of Agriculture, 1958.