Seminar on Surveying and Land Economy in Sri Lanka Colombo & Commonwealth Association of Surveying and Land Economy. (1974). Report of the proceedings of a seminar on surveying and land economy in Sri Lanka, held at the Bandaranaike Memorial International Conference Hall, Colombo, on 2-4 October 1974. Commonwealth Association of Surveying and Land Economy.
Παραπομπή σε μορφή Chicago (17η εκδ.)Seminar on Surveying and Land Economy in Sri Lanka Colombo και Commonwealth Association of Surveying and Land Economy. Report of the Proceedings of a Seminar on Surveying and Land Economy in Sri Lanka, Held at the Bandaranaike Memorial International Conference Hall, Colombo, on 2-4 October 1974. London: Commonwealth Association of Surveying and Land Economy, 1974.
Παραπομπή σε μορφή MLA (8th εκδ.)Seminar on Surveying and Land Economy in Sri Lanka Colombo και Commonwealth Association of Surveying and Land Economy. Report of the Proceedings of a Seminar on Surveying and Land Economy in Sri Lanka, Held at the Bandaranaike Memorial International Conference Hall, Colombo, on 2-4 October 1974. Commonwealth Association of Surveying and Land Economy, 1974.