Παραπομπή APA

Borner, G. (1993). Early universe: Facts and fiction (3.).

Παραπομπή Chicago Style

Borner, Gerhard. Early Universe: Facts and Fiction. 3. Springer-Verlag, Berlin, 1993.

Παραπομπή MLA

Borner, Gerhard. Early Universe: Facts and Fiction. 3. 1993.