Citazione Stile APA (7a Edizione)

Palmer, R. G., & Troeh, F. R. (1977). Introductory soil science laboratory manual (2nd ed.). Iowa State University Press.

Citazione stile Chigago Style (17a edizione)

Palmer, Robert G., e Frederick R. Troeh. Introductory Soil Science Laboratory Manual. 2nd ed. Ames: Iowa State University Press, 1977.

Citatione MLA (9a ed.)

Palmer, Robert G., e Frederick R. Troeh. Introductory Soil Science Laboratory Manual. 2nd ed. Iowa State University Press, 1977.