APA (7th ed.) Citation

Leon, G. d. (1971). The economics and management of system construction. Longman.

Chicago Style (17th ed.) Citation

Leon, George deLucenay. The Economics and Management of System Construction. London: Longman, 1971.

MLA (9th ed.) Citation

Leon, George deLucenay. The Economics and Management of System Construction. Longman, 1971.

Warning: These citations may not always be 100% accurate.