Cita APA (7th ed.)

Helmkamp, J. G., Imdieke, L. F., & Smith, R. E. (1986). Principles of accounting (2a. ed.). John Wiley.

Cita Chicago (17th ed.)

Helmkamp, John G., Leroy F. Imdieke, i Ralph E. Smith. Principles of Accounting. 2a. ed. Nueva York: John Wiley, 1986.

Cita MLA (9th ed.)

Helmkamp, John G., et al. Principles of Accounting. 2a. ed. John Wiley, 1986.