BOWEN, I. (1955). Population. Nisbet.
Chicago Style (17th ed.) ZitazioaBOWEN, Ian. Population. London: Nisbet, 1955.
MLA (9th ed.) ZitazioaBOWEN, Ian. Population. Nisbet, 1955.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.
BOWEN, I. (1955). Population. Nisbet.
Chicago Style (17th ed.) ZitazioaBOWEN, Ian. Population. London: Nisbet, 1955.
MLA (9th ed.) ZitazioaBOWEN, Ian. Population. Nisbet, 1955.