APA citiranje

Gaddie, R. E. (1977). Earthworms for ecology & profit. Ontario, Calif: Bookworm Pub. Co.

Trích dẫn kiểu Chicago

Gaddie, Ronald E. Earthworms for Ecology & Profit. Ontario, Calif: Bookworm Pub. Co, 1977.

MLA citiranje

Gaddie, Ronald E. Earthworms for Ecology & Profit. Ontario, Calif: Bookworm Pub. Co, 1977.

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