Abeysekara, T., & Sēnānāyaka, P. (1974). Economics of vegetable production and marketing: A case study of 4 villages in Palugama (Welimada). Agrarian Research and Training Institute.
Lua i Stíl Chicago (17ú heag.)Abeysekara, Terrence, agus Piyadāsa Sēnānāyaka. Economics of Vegetable Production and Marketing: A Case Study of 4 Villages in Palugama (Welimada). Colombo: Agrarian Research and Training Institute, 1974.
Lua MLA (8ú heag.)Abeysekara, Terrence, agus Piyadāsa Sēnānāyaka. Economics of Vegetable Production and Marketing: A Case Study of 4 Villages in Palugama (Welimada). Agrarian Research and Training Institute, 1974.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.