Cita APA (7a ed.)

Schmitt Robert L. (2018). Rock Crusher. McGraw-Hill Education LLC..

Cita Chicago Style (17a ed.)

Schmitt Robert L. Rock Crusher. New York, N.Y.: McGraw-Hill Education LLC., 2018.

Cita MLA (8a ed.)

Schmitt Robert L. Rock Crusher. McGraw-Hill Education LLC., 2018.