Cita APA (7th ed.)

Kahlen, L. (2017). German grammar made easy (Second edition.). McGraw-Hill.

Cita Chicago (17th ed.)

Kahlen, Lisa. German Grammar Made Easy. Second edition. New York: McGraw-Hill, 2017.

Cita MLA (9th ed.)

Kahlen, Lisa. German Grammar Made Easy. Second edition. McGraw-Hill, 2017.