APA استشهاد

Sheldrake, R. (1989). The presence of the past. ollins.

استشهاد بنمط شيكاغو

Sheldrake, Rupert. The Presence of the Past. Fontana: ollins, 1989.

MLA استشهاد

Sheldrake, Rupert. The Presence of the Past. ollins, 1989.