Παραπομπή APA

Wooldridge, S. (1984). Data processing made simple (2nd ed.). Heinman.

Παραπομπή Chicago Style

Wooldridge, Susan. Data Processing Made Simple. 2nd ed. London: Heinman, 1984.

Παραπομπή MLA

Wooldridge, Susan. Data Processing Made Simple. 2nd ed. Heinman, 1984.