APA استشهاد

Hajnal,Andras, & Hamburger,Peter. (1999). Set theory. Cambridge University.

استشهاد بنمط شيكاغو

Hajnal,Andras, و Hamburger,Peter. Set Theory. Cambridge: Cambridge University, 1999.

MLA استشهاد

Hajnal,Andras, و Hamburger,Peter. Set Theory. Cambridge University, 1999.