APA (7th ed.) Citation

Gordon Walker, P. C. (1939). An outline of man's history. N.C.L.C. Pub. Society.

Chicago Style (17th ed.) Citation

Gordon Walker, Patrick Chrestien. An Outline of Man's History. London: N.C.L.C. Pub. Society, 1939.

MLA (8th ed.) Citation

Gordon Walker, Patrick Chrestien. An Outline of Man's History. N.C.L.C. Pub. Society, 1939.

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