Citazione Stile APA (7a Edizione)

Shepardson, W. H. 1. (1929). Agricultural education in the United States. The Macmillan company.

Citazione stile Chigago Style (17a edizione)

Shepardson, Whitney Hart 1890. Agricultural Education in the United States. New York: The Macmillan company, 1929.

Citatione MLA (9a ed.)

Shepardson, Whitney Hart 1890. Agricultural Education in the United States. The Macmillan company, 1929.