Cita APA (7a ed.)

Bell, J. L., & Slomson, A. (1969). Models and ultraproducts: An introduction. North-Holland.

Cita Chicago Style (17a ed.)

Bell, J. L., y A.B Slomson. Models and Ultraproducts: An Introduction. Amsterdam [etc.]: North-Holland, 1969.

Cita MLA (9a ed.)

Bell, J. L., y A.B Slomson. Models and Ultraproducts: An Introduction. North-Holland, 1969.