Brits, G. J., & Meynhardt, J. T. (1992). International workshop on intensive cultivation of Protea. ISHS.
Tohutoru Kātū Chicago (17th ed.)Brits, G. J., me J. T. Meynhardt. International Workshop on Intensive Cultivation of Protea. Wageningen: ISHS, 1992.
Tohutoro MLA (9th ed.)Brits, G. J., me J. T. Meynhardt. International Workshop on Intensive Cultivation of Protea. ISHS, 1992.
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