APA (7th ed.) Citation

O'LEARY, D. L. (1939). Arabic thought and its place in history. Routledge and Kegan Paul.

Chicago Style (17th ed.) Citation

O'LEARY, De Lacy. Arabic Thought and Its Place in History. London: Routledge and Kegan Paul, 1939.

MLA (9th ed.) Citation

O'LEARY, De Lacy. Arabic Thought and Its Place in History. Routledge and Kegan Paul, 1939.