Cita APA (7th ed.)

Gordon, R. L., & Stillman, D. M. (2013). The Ultimate Spanish verb: Review and practice (Second edition.). McGraw-Hill.

Cita Chicago (17th ed.)

Gordon, Ronni L., i David M. Stillman. The Ultimate Spanish Verb: Review and Practice. Second edition. New York: McGraw-Hill, 2013.

Cita MLA (9th ed.)

Gordon, Ronni L., i David M. Stillman. The Ultimate Spanish Verb: Review and Practice. Second edition. McGraw-Hill, 2013.