Cita APA (7a ed.)

Hagen, H., & Roller, D. (1991). Geometric modeling: Methods and applications. Springer.

Cita Chicago Style (17a ed.)

Hagen, H., y D. Roller. Geometric Modeling: Methods and Applications. Berlin [etc.]: Springer, 1991.

Cita MLA (9a ed.)

Hagen, H., y D. Roller. Geometric Modeling: Methods and Applications. Springer, 1991.