University of California. (1978). Plant growth regulators: Study guide for agricultural pest control advisors. University of California.
Cita Chicago (17th ed.)University of California. Plant Growth Regulators: Study Guide for Agricultural Pest Control Advisors. Berkeley: University of California, 1978.
Cita MLA (9th ed.)University of California. Plant Growth Regulators: Study Guide for Agricultural Pest Control Advisors. University of California, 1978.
Atenció: Aquestes cites poden no estar 100% correctes.