APA

Section for Vegetables S. P. C. a. C. H. E. o. I. I. o. V. P. G. o. t. A. o. A. S. o. t. G., . (1989). International Symposium on Growth and Yield Control in Vegetable Production. Wageningen: International Society for Horticultural Science.

Chicago

Section for Vegetables Section Protected Cultivation and Commission Horticultural Engineering of ISHS Institute of Vegetable Production Grossbeeren of the Academy of Agricultural Sciences of the GDR, . 1989. International Symposium on Growth and Yield Control in Vegetable Production. Wageningen: International Society for Horticultural Science.

Harvard

Section for Vegetables S. P. C. a. C. H. E. o. I. I. o. V. P. G. o. t. A. o. A. S. o. t. G., . (1989). International Symposium on Growth and Yield Control in Vegetable Production. Wageningen: International Society for Horticultural Science.

MLA

Section for Vegetables Section Protected Cultivation and Commission Horticultural Engineering of ISHS Institute of Vegetable Production Grossbeeren of the Academy of Agricultural Sciences of the GDR, . International Symposium on Growth and Yield Control in Vegetable Production. Wageningen: International Society for Horticultural Science. 1989.