MLA

Langford, Peter, Ian Bryan, and John McGarry. Kelsenian Legal Science and the Nature of Law. Cham: Springer International Publishing, 2017.

APA

Langford, P., Bryan, I., & McGarry, J. (2017). Kelsenian Legal Science and the Nature of Law. Cham: Springer International Publishing.

Chicago

Langford, Peter, Ian Bryan, and John McGarry. Kelsenian Legal Science and the Nature of Law. Cham: Springer International Publishing, 2017.