Cita APA (7a ed.)

83407 Knapp, A. (1920). Shade: Temporary and permanent. Londres (RU) Chapman and Hall.

Cita Chicago Style (17a ed.)

83407 Knapp, A.W. Shade: Temporary and Permanent. Londres (RU) Chapman and Hall, 1920.

Cita MLA (8a ed.)

83407 Knapp, A.W. Shade: Temporary and Permanent. Londres (RU) Chapman and Hall, 1920.

Cita IICA/CATIE

83407 Knapp, A. 1920. Shade: Temporary and permanent. Londres (RU) Chapman and Hall.