APA (7th ed.) Citation

(1939). Vol. 17, № 19 (Vol. 31, № 38). 1939.

Chicago Style (17th ed.) Citation

Vol. 17, № 19 (Vol. 31, № 38). 1939, 1939.

MLA (9th ed.) Citation

Vol. 17, № 19 (Vol. 31, № 38). 1939, 1939.

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