APA استشهاد

Hrbacek, k. (1984). Introduction to set theory. Marcel Dekker.

استشهاد بنمط شيكاغو

Hrbacek, karel. Introduction to Set Theory. New York: Marcel Dekker, 1984.

MLA استشهاد

Hrbacek, karel. Introduction to Set Theory. Marcel Dekker, 1984.