APA引文

Alchourrón, C. E., & Bulygin, E. (1971). Normative systems. Springer-Verlag.

Chicago Style (17th ed.) Citation

Alchourrón, Carlos E., and Eugenio Bulygin. Normative Systems. New York: Springer-Verlag, 1971.

MLA引文

Alchourrón, Carlos E., and Eugenio Bulygin. Normative Systems. Springer-Verlag, 1971.

警告：這些引文格式不一定是100％准確.