Cita APA

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

Chicago Style Citation

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

Cita MLA

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

Atenció: Aquestes cites poden no estar 100% correctes.