Gaya APA

Gardner, M, B, ;, W, S, ;, W. (1984). Microeconomics . Boston: Houghton Mifflin companny.

Gaya MLA

Gardner, Martin, Bronfenbrenner, ;, Werner, Sichel, ;, Wayland. "Microeconomics". Boston: Houghton Mifflin companny, 1984. Text.