Gaya APA

Laennle, S, R. (1989). The aspen mountain camping equipment company (business practice set) for use with acconting principles, Hermanson, Edwards, and Salmonson (4th ed.). Homewood: Richard D. Irwin.

Gaya MLA

Laennle, Sondra, R.. "The aspen mountain camping equipment company (business practice set) for use with acconting principles, Hermanson, Edwards, and Salmonson". 4th ed. Homewood: Richard D. Irwin, 1989. Text.