APA استشهاد

Marki,L, & Wiegandt,R. (1985). Radical theory. North-Holland.

استشهاد بنمط شيكاغو

Marki,L, و Wiegandt,R. Radical Theory. Amsterdam: North-Holland, 1985.

MLA استشهاد

Marki,L, و Wiegandt,R. Radical Theory. North-Holland, 1985.