Cita APA (7a ed.)

Herrmann, R., Burger, K., & Smit, H. P. (1993). International commodity policy: A quantitative analysis. Routledge.

Cita Chicago Style (17a ed.)

Herrmann, Roland, Kees Burger, y Hidde P. Smit. International Commodity Policy: A Quantitative Analysis. London [etc.]: Routledge, 1993.

Cita MLA (9a ed.)

Herrmann, Roland, et al. International Commodity Policy: A Quantitative Analysis. Routledge, 1993.