Cita APA (7a ed.)

Ryan, M. (2019). Geometry essentials (1st edition.). For Dummies.

Cita Chicago Style (17a ed.)

Ryan, Mark. Geometry Essentials. 1st edition. Hoboken, New Jersey: For Dummies, 2019.

Cita MLA (9a ed.)

Ryan, Mark. Geometry Essentials. 1st edition. For Dummies, 2019.