Cita APA

Goulding, R., Volans, G. N., Crome, P., & Widdop, B. (1976). Letter: Paraquat poisoning.

Chicago Style Citation

Goulding, R., G N. Volans, P. Crome, i B. Widdop. Letter: Paraquat Poisoning. 1976.

Cita MLA

Goulding, R., G N. Volans, P. Crome, i B. Widdop. Letter: Paraquat Poisoning. 1976.