APA (7. basım) Alıntı

Asimov, I. (1987). Foundation and earth. Grafton Books.

Chicago Style (17. basım) Atıf

Asimov, Isaac. Foundation and Earth. Grafton Books, 1987.

MLA (8th ed.) Atıf

Asimov, Isaac. Foundation and Earth. Grafton Books, 1987.