Category theory '90 :Côme, Italie, Pedicchio, M. C., Rosolini, G., & Carboni, A. Category Theory: Proceedings of the International Conference held in Como, Italy, July 22 28, 1990. Springer.
Citazione stile Chigago Style (17a edizione)Category theory '90 :Côme, Italie, Maria Cristina Pedicchio, Giuseppe Rosolini, e Aurelio Carboni. Category Theory: Proceedings of the International Conference Held in Como, Italy, July 22 28, 1990. Berlin [etc.]: Springer.
Citatione MLA (8a ed.)Category theory '90 :Côme, Italie, et al. Category Theory: Proceedings of the International Conference Held in Como, Italy, July 22 28, 1990. Springer.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.