Hussey, N.W., & Bravenboer, L. 1971 Control of pests in glasshouse culture by the introduction of natural enemies.. Biological Control. Plenum Press New York 511 pp.

Notes: [Proceedings of an AAAS Symposium on Biological Control, held at Boston, Massachusetts December 30-31, 1969.] Planococcus citri was given as an example of a pest that could be successfully controlled on gardenias by two encyrtid parasites (Leptomastix dactylopii and Leptomastidea abnormis).