Cita APA

Hopkins, D. P. (1957). Chemical humus and the soil: A simple presentation of contemporary knowledge and opinions about fertilizers, manures, and soil fertility Faber and Faber.

Citación estilo Chicago

Hopkins, Donald Percy. Chemical Humus and the Soil: A Simple Presentation of Contemporary Knowledge and Opinions About Fertilizers, Manures, and Soil Fertility. rev. ed. London: Faber and Faber, 1957.

Cita MLA

Hopkins, Donald Percy. Chemical Humus and the Soil: A Simple Presentation of Contemporary Knowledge and Opinions About Fertilizers, Manures, and Soil Fertility. rev. ed. London: Faber and Faber, 1957.