Cita APA (7th ed.)

ebrary, Inc, Claessen, H. J. M., & Skalník, P. (1981). The study of the state. Mouton.

Cita Chicago (17th ed.)

ebrary, Inc, H. J. M. Claessen, i Peter Skalník. The Study of the State. The Hague ; New York: Mouton, 1981.

Cita MLA (9th ed.)

ebrary, Inc, et al. The Study of the State. Mouton, 1981.