Παραπομπή APA

Holland,F A, & Watson,F A. (1974). Introduction to process economics (2.). John Wiley & Sons.

Παραπομπή Chicago Style

Holland,F A, και Watson,F A. Introduction to Process Economics. 2. London: John Wiley & Sons, 1974.

Παραπομπή MLA

Holland,F A, και Watson,F A. Introduction to Process Economics. 2. John Wiley & Sons, 1974.