Cita APA (7th ed.)

Pollak, F. (1980). Pump users' handbook (2a. ed.). Gulf.

Cita Chicago (17th ed.)

Pollak, F. Pump Users' Handbook. 2a. ed. Houston: Gulf, 1980.

Cita MLA (9th ed.)

Pollak, F. Pump Users' Handbook. 2a. ed. Gulf, 1980.