Gaya APA

BITTEL, L, R., Burke, R, S. (1980). BUSINESS MODEL AND ACTIVITY FILE FOR BUSINESS IN ACTION, THIRD EDITION . USA: MCGRAW-HILL BOOK COMPANY.

Gaya MLA

BITTEL, LESTER, R.., Burke, Ronald, S.. "BUSINESS MODEL AND ACTIVITY FILE FOR BUSINESS IN ACTION, THIRD EDITION". USA: MCGRAW-HILL BOOK COMPANY, 1980. Text.