Cita APA (7a ed.)

Sharp, S. L., & Strothmann, F. W. (1941). German reading grammar. Ginn and Company.

Cita Chicago Style (17a ed.)

Sharp, Stanley Louis, y Friedrich Wilhelm Strothmann. German Reading Grammar. Boston [etc.]: Ginn and Company, 1941.

Cita MLA (9a ed.)

Sharp, Stanley Louis, y Friedrich Wilhelm Strothmann. German Reading Grammar. Ginn and Company, 1941.