Neumark, S. D. (1938). The citrus industry of South Africa, its national and international aspects. Witwatersrand Univ. Pr..
Dyfyniad Arddull ChicagoNeumark, S. D. The Citrus Industry of South Africa, Its National and International Aspects. Johannesburg: Witwatersrand Univ. Pr., 1938.
Dyfyniad MLANeumark, S. D. The Citrus Industry of South Africa, Its National and International Aspects. Witwatersrand Univ. Pr., 1938.
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