(1947). The World's great thinkers. Rondom.
Chicago Style (17. basım) AtıfThe World's Great Thinkers. New York: Rondom, 1947.
MLA (9th ed.) AtıfThe World's Great Thinkers. Rondom, 1947.
Uyarı: Bu alıntı herzaman %100 doğru olmayabilir..
(1947). The World's great thinkers. Rondom.
Chicago Style (17. basım) AtıfThe World's Great Thinkers. New York: Rondom, 1947.
MLA (9th ed.) AtıfThe World's Great Thinkers. Rondom, 1947.