APA استشهاد

Collingwood,R G. (1989). The Idea of History. OUP.

استشهاد بنمط شيكاغو

Collingwood,R G. The Idea of History. Madras: OUP, 1989.

MLA استشهاد

Collingwood,R G. The Idea of History. OUP, 1989.