International Protea Research Symposium Cape Town, South Africa, International Society for Horticultural Science. Protea Working Group, International Society for Horticultural Science. Section for Ornamental Plants, Meynhardt, J. T., Ben-Jaacov, J., & Ferreira, D. I. (1986). First International Protea Research Symposium: Cape Town, South Africa, 28 and 29 August 1985. International Society for Horticultural Science.
Chicago-referens (17:e uppl.)International Protea Research Symposium Cape Town, South Africa, International Society for Horticultural Science. Protea Working Group, International Society for Horticultural Science. Section for Ornamental Plants, J. T. Meynhardt, J. Ben-Jaacov, och D. I. Ferreira. First International Protea Research Symposium: Cape Town, South Africa, 28 and 29 August 1985. Wageningen, Netherlands: International Society for Horticultural Science, 1986.
MLA-referens (8:e uppl.)International Protea Research Symposium Cape Town, South Africa, et al. First International Protea Research Symposium: Cape Town, South Africa, 28 and 29 August 1985. International Society for Horticultural Science, 1986.