Cita APA (7a ed.)

Schumann, K., Chesterfield, E. o., & Stanhope, F. D. (1918). Earl of Chesterfield: Letters to his son. Bernhard Tauchnitz.

Cita Chicago Style (17a ed.)

Schumann, Kurt, Earl of Chesterfield, y Felipe Dormer Stanhope. Earl of Chesterfield: Letters to His Son. Leipzig: Bernhard Tauchnitz, 1918.

Cita MLA (9a ed.)

Schumann, Kurt, et al. Earl of Chesterfield: Letters to His Son. Bernhard Tauchnitz, 1918.