Perera, M. P., & Abeyratne, F. (1978). The citronella industry in the Hambantota District. Agrarian Research & Training Institute.
Chicago Style (17. basım) AtıfPerera, M. P., ve Fredrick Abeyratne. The Citronella Industry in the Hambantota District. Colombo: Agrarian Research & Training Institute, 1978.
MLA (8th ed.) AtıfPerera, M. P., ve Fredrick Abeyratne. The Citronella Industry in the Hambantota District. Agrarian Research & Training Institute, 1978.
Uyarı: Bu alıntı herzaman %100 doğru olmayabilir..