Citazione Stile APA (7a Edizione)

Péron, J. Y., & Welles, G. W. H. (1989). First international symposium on diversification of vegetable crops. ISHS.

Citazione stile Chigago Style (17a edizione)

Péron, J. Y., e G. W. H. Welles. First International Symposium on Diversification of Vegetable Crops. Wageningen: ISHS, 1989.

Citatione MLA (9a ed.)

Péron, J. Y., e G. W. H. Welles. First International Symposium on Diversification of Vegetable Crops. ISHS, 1989.