Cita APA (7a ed.)

Hart, O. D., & Tirole, J. (1990). Vertical integration and market foreclosure. [s.n.].

Cita Chicago Style (17a ed.)

Hart, Oliver D., y Jean Tirole. Vertical Integration and Market Foreclosure. [S.l.]: [s.n.], 1990.

Cita MLA (9a ed.)

Hart, Oliver D., y Jean Tirole. Vertical Integration and Market Foreclosure. [s.n.], 1990.