Helmkamp, J., Imdieke, L., & Smith, R. (1989). Principles of accounting (3rd.). Wiley.
Chicago Style (17th ed.) CitationHelmkamp, J., L. Imdieke, and R. Smith. Principles of Accounting. 3rd. New York: Wiley, 1989.
MLA (8th ed.) CitationHelmkamp, J., et al. Principles of Accounting. 3rd. Wiley, 1989.
Warning: These citations may not always be 100% accurate.