APA (7th ed.) Citation

Ferreira, F. A., & Pinto, A. A. (2007). International duopoly with unknown costs.

Chicago Style (17th ed.) Citation

Ferreira, F. A., and A. A. Pinto. International Duopoly with Unknown Costs. 2007.

MLA (8th ed.) Citation

Ferreira, F. A., and A. A. Pinto. International Duopoly with Unknown Costs. 2007.

Warning: These citations may not always be 100% accurate.