Study Week on Natural Products and the Protection of Plants & Marini-Bettolo, G. (1977). Natural products and the protection of plants: Proceedings. Elsevier Scientific Publishing Company.
Παραπομπή σε μορφή Chicago (17η εκδ.)Study Week on Natural Products and the Protection of Plants και G.B Marini-Bettolo. Natural Products and the Protection of Plants: Proceedings. Amsterdam: Elsevier Scientific Publishing Company, 1977.
Παραπομπή σε μορφή MLA (9th εκδ.)Study Week on Natural Products and the Protection of Plants και G.B Marini-Bettolo. Natural Products and the Protection of Plants: Proceedings. Elsevier Scientific Publishing Company, 1977.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.