Karl Raymund Popper.

MLA

Major, Arseen. Karl Raymund Popper. Gent: Vermeylenfonds, 1984.

APA

Major, A. (1984). Karl Raymund Popper. Gent: Vermeylenfonds.

Chicago

Major, Arseen Karl Raymund Popper. Gent: Vermeylenfonds, 1984.