APA引文

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

Chicago Style (17th ed.) Citation

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

MLA引文

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