Tohutoro APA (7th ed.)

Tompkins, P., & Bird, C. (1991). Secrets of the soil. Viking Arkana.

Tohutoru Kātū Chicago

Tompkins, Peter, me Christopher Bird. Secrets of the Soil. London: Viking Arkana, 1991.

Tohutoro MLA

Tompkins, Peter, me Christopher Bird. Secrets of the Soil. Viking Arkana, 1991.

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