Citazione Stile APA (7a Edizione)

Singer, I. M., & Thorpe, J. A. (1967). Lecture notes on elementary topology and geometry. Scott, Foresman.

Citazione stile Chigago Style (17a edizione)

Singer, Isadore Manuel, e John A. Thorpe. Lecture Notes on Elementary Topology and Geometry. Glenview: Scott, Foresman, 1967.

Citatione MLA (9a ed.)

Singer, Isadore Manuel, e John A. Thorpe. Lecture Notes on Elementary Topology and Geometry. Scott, Foresman, 1967.