Cita APA (7a ed.)

Ross, S. R. J., Knapp, B. J., & MacCrae, D. (1989). Challenge of the economic environment (1. publ.). Longman.

Cita Chicago Style (17a ed.)

Ross, Simon R. J., Brian J. Knapp, y Duncan MacCrae. Challenge of the Economic Environment. 1. publ. Harlow: Longman, 1989.

Cita MLA (9a ed.)

Ross, Simon R. J., et al. Challenge of the Economic Environment. 1. publ. Longman, 1989.