Citazione APA

Perera, M. P., & Abeyratne, F. (1978). The citronella industry in the Hambantota District. Agrarian Research & Training Institute.

Stile di citazione Chicago

Perera, M. P., e Fredrick Abeyratne. The Citronella Industry in the Hambantota District. Colombo: Agrarian Research & Training Institute, 1978.

Citazione MLA

Perera, M. P., e Fredrick Abeyratne. The Citronella Industry in the Hambantota District. Agrarian Research & Training Institute, 1978.