Citazione Stile APA (7a Edizione)

Schopmeyer, C. S. (1974). Seeds of woody plants in the United States. Forest Service.

Citazione stile Chigago Style (17a edizione)

Schopmeyer, C. S. Seeds of Woody Plants in the United States. Washington, D.C: Forest Service, 1974.

Citatione MLA (9a ed.)

Schopmeyer, C. S. Seeds of Woody Plants in the United States. Forest Service, 1974.