Cita APA (7a ed.)

Geroski, P., Gilbert, R. J., & Jacquemin, A. (1990). Barriers to entry and strategic competition. Harwood Academic.

Cita Chicago Style (17a ed.)

Geroski, Paul, Richard J. Gilbert, y Alex Jacquemin. Barriers to Entry and Strategic Competition. Chur [etc.]: Harwood Academic, 1990.

Cita MLA (9a ed.)

Geroski, Paul, et al. Barriers to Entry and Strategic Competition. Harwood Academic, 1990.