Gaya APA

al., E. et al (1990). Introductory Mathematical Analysis For Business, Economics, And The Life And Social Sciences (6th Ed.). New Jersey: Prentice-Hall.

Gaya MLA

al., Et. et al. "Introductory Mathematical Analysis For Business, Economics, And The Life And Social Sciences". 6th Ed. New Jersey: Prentice-Hall, 1990. Text.