APA (7e ed.) Bronvermelding

Gunawardena, P. J., & Chandrasiri, A. (1980). Factors influencing vegetable prices: A study of the vegetable economy in Sri Lanka. Agrarian Research and Training Institute.

Chicago (17e ed.) Bronvermelding

Gunawardena, P. J., en Athula Chandrasiri. Factors Influencing Vegetable Prices: A Study of the Vegetable Economy in Sri Lanka. Colombo: Agrarian Research and Training Institute, 1980.

MLA (8e ed.) Bronvermelding

Gunawardena, P. J., en Athula Chandrasiri. Factors Influencing Vegetable Prices: A Study of the Vegetable Economy in Sri Lanka. Agrarian Research and Training Institute, 1980.