MLA

Grabowski, Andrzej, and Malgorzata Kieltyka. Juristic Concept of the Validity of Statutory Law. Springer Berlin Heidelberg, 2013.

APA

Grabowski, A., & Kieltyka, M. (2013). Juristic Concept of the Validity of Statutory Law. Springer Berlin Heidelberg.

Chicago

Grabowski, Andrzej, and Malgorzata Kieltyka. Juristic Concept of the Validity of Statutory Law. : Springer Berlin Heidelberg, 2013.