Παραπομπή APA

Lansdown, R. J. (1982). Business graphics. Pergamon Infotech.

Παραπομπή Chicago Style

Lansdown, R J. Business Graphics. England: Pergamon Infotech, 1982.

Παραπομπή MLA

Lansdown, R J. Business Graphics. Pergamon Infotech, 1982.