Ben-Jaacov, J., & Ferreira, D. I. (1985). First international protea research symposium. International Society for Horticultural Science.
Cita Chicago (17th ed.)Ben-Jaacov, J., i D. I. Ferreira. First International Protea Research Symposium. Lovaina: International Society for Horticultural Science, 1985.
Cita MLA (9th ed.)Ben-Jaacov, J., i D. I. Ferreira. First International Protea Research Symposium. International Society for Horticultural Science, 1985.
Atenció: Aquestes cites poden no estar 100% correctes.