APA (7th ed.) Citation

Parker, G. (1968). The Logic of unity: An economic geography of the common market. Langmans.

Chicago Style (17th ed.) Citation

Parker, Geoffrey. The Logic of Unity: An Economic Geography of the Common Market. London [u.a.]: Langmans, 1968.

MLA (9th ed.) Citation

Parker, Geoffrey. The Logic of Unity: An Economic Geography of the Common Market. Langmans, 1968.