University of California. (1978). Plant growth regulators: Study guide for agricultural pest control advisors. University of California.
Chicago-Zitierstil (17. Ausg.)University of California. Plant Growth Regulators: Study Guide for Agricultural Pest Control Advisors. Berkeley: University of California, 1978.
MLA-Zitierstil (9. Ausg.)University of California. Plant Growth Regulators: Study Guide for Agricultural Pest Control Advisors. University of California, 1978.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.