APA
Commonwealth Association of Surveying and Land Economy, . (1974). Seminar and surveying and land economy in Sri Lanka, Colombo, Sri Lanka, October 1974. London: CASLE.
Chicago
Commonwealth Association of Surveying and Land Economy, . 1974. Seminar and surveying and land economy in Sri Lanka, Colombo, Sri Lanka, October 1974. London: CASLE.
Harvard
Commonwealth Association of Surveying and Land Economy, . (1974). Seminar and surveying and land economy in Sri Lanka, Colombo, Sri Lanka, October 1974. London: CASLE.
MLA
Commonwealth Association of Surveying and Land Economy, . Seminar and surveying and land economy in Sri Lanka, Colombo, Sri Lanka, October 1974. London: CASLE. 1974.
