Gaya APA

Tyran, M, R., Najoan, F, G. (1994). Tools for executive rasio bisnis: the vest pocket guide to business ratios . Jakarta: Elex Media Komputindo.

Gaya MLA

Tyran, Michael, R., Najoan, Felicia, Gerda. "Tools for executive rasio bisnis: the vest pocket guide to business ratios". Jakarta: Elex Media Komputindo, 1994. Text.