APA Citation

Porter, K. W. (1931). John Jacob Astor, business man. Cambridge, Mass.: Harvard university press.

Chicago Style Citation

Porter, Kenneth Wiggins. John Jacob Astor, Business Man. Cambridge, Mass.: Harvard university press, 1931.

MLA Citation

Porter, Kenneth Wiggins. John Jacob Astor, Business Man. Cambridge, Mass.: Harvard university press, 1931.

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