P.J. Proudhon.

MLA

Holterman, Thom, Anton Constandse, and Simon Radius. P.j. Proudhon. 's-Gravenhage: De As, 1980.

APA

Holterman, T., Constandse, A., & Radius, S. (1980). P.J. Proudhon. 's-Gravenhage: De As.

Chicago

Holterman, Thom, Anton Constandse, and Simon Radius. P.J. Proudhon. 's-Gravenhage: De As, 1980.