APA (7th ed.) Citation

HELMKAMP, J. G. (1983). Principles of accounting. John Wiley & Sons.

Chicago Style (17th ed.) Citation

HELMKAMP, John G. Principles of Accounting. New York: John Wiley & Sons, 1983.

MLA (8th ed.) Citation

HELMKAMP, John G. Principles of Accounting. John Wiley & Sons, 1983.