Baker, K. F. (1957). The U. C. system for producing healthy container- grown plants. University of California.
Cita Chicago (17th ed.)Baker, Kenneth F. The U. C. System for Producing Healthy Container- Grown Plants. Berkeley: University of California, 1957.
Cita MLA (9th ed.)Baker, Kenneth F. The U. C. System for Producing Healthy Container- Grown Plants. University of California, 1957.
Atenció: Aquestes cites poden no estar 100% correctes.