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.
Παραπομπή σε μορφή Chicago (17η εκδ.)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, και 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.
Παραπομπή σε μορφή MLA (8th εκδ.)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.