Citazione Stile APA (7a Edizione)

Klemperer, P., & Padilla, A. (1993). Do Firms' Product Lines Include Too Many Varieties, and Do Shops Open Too Many Days? CEPR.

Citazione stile Chigago Style (17a edizione)

Klemperer, P., e A. Padilla. Do Firms' Product Lines Include Too Many Varieties, and Do Shops Open Too Many Days? CEPR, 1993.

Citatione MLA (9a ed.)

Klemperer, P., e A. Padilla. Do Firms' Product Lines Include Too Many Varieties, and Do Shops Open Too Many Days? CEPR, 1993.