Citazione APA

Feiffer, P., & Feiffer, R. (1969). Combining of various crops. Asia publishing house.

Stile di citazione Chicago

Feiffer, P., e R. Feiffer. Combining of Various Crops. New Delhi: Asia publishing house, 1969.

Citazione MLA

Feiffer, P., e R. Feiffer. Combining of Various Crops. Asia publishing house, 1969.