(1981). Crop centers in 5 regions. Bulletin Today.
Cita Chicago (17th ed.)"Crop Centers in 5 Regions." Bulletin Today 1981.
Cita MLA (9th ed.)"Crop Centers in 5 Regions." Bulletin Today, 1981.
Atenció: Aquestes cites poden no estar 100% correctes.
Cita APA (7th ed.)