Citazione Stile APA (7a Edizione)

BELL, J. L., & BELL, J. L. a. S. (1969). Models and ultraproducts: An introduction. North-Holland.

Citazione stile Chigago Style (17a edizione)

BELL, J. L., e J. L. and Slomson BELL. Models and Ultraproducts: An Introduction. Amsterdam: North-Holland, 1969.

Citatione MLA (9a ed.)

BELL, J. L., e J. L. and Slomson BELL. Models and Ultraproducts: An Introduction. North-Holland, 1969.