Lawvere, F. W., Lawvere, F. W., Maurer, C., & Wraith, G. C. (1975). Model theory and topoi: A collection of lectures by various authors. Springer-Verlag.

Lawvere, F. W.,ed, F. W. Lawvere, Christian Maurer, and Gavin C. Wraith. Model Theory and Topoi: A Collection of Lectures by Various Authors. Berlin ; New York: Springer-Verlag, 1975.

Lawvere, F. W.,ed, et al. Model Theory and Topoi: A Collection of Lectures by Various Authors. Springer-Verlag, 1975.