Perera, M. P., & Abeyratne, F. (1978). The citronella industry in the Hambantota District. Agrarian Research & Training Institute.
Chicago Style aipamenaPerera, M. P., and Fredrick Abeyratne. The Citronella Industry in the Hambantota District. Colombo: Agrarian Research & Training Institute, 1978.
MLA aipamenaPerera, M. P., and Fredrick Abeyratne. The Citronella Industry in the Hambantota District. Agrarian Research & Training Institute, 1978.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.