Cita APA (7a ed.)

Longmans, Green and Co., firma libreros, Londres. (1934). Classified Catalogue of Works.

Cita Chicago Style (17a ed.)

Longmans, Green and Co., firma libreros, Londres. Classified Catalogue of Works. London, 1934.

Cita MLA (9a ed.)

Longmans, Green and Co., firma libreros, Londres. Classified Catalogue of Works. 1934.