Cita APA (7th ed.)

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.