Παραπομπή APA

Roberts, H. E. (1970). Practical refrigeration for marine engineers. James Munro.

Παραπομπή Chicago Style

Roberts, H E. Practical Refrigeration for Marine Engineers. Glasgow: James Munro, 1970.

Παραπομπή MLA

Roberts, H E. Practical Refrigeration for Marine Engineers. James Munro, 1970.