Oppenheim, E. P. (1940). General Besserley's Second Puzzle Box. Hodder and Stoughton.
Cita Chicago Style (17a ed.)Oppenheim, E. Phillips. General Besserley's Second Puzzle Box. London: Hodder and Stoughton, 1940.
Cita MLA (9a ed.)Oppenheim, E. Phillips. General Besserley's Second Puzzle Box. Hodder and Stoughton, 1940.
Precaución: Estas citas no son 100% exactas.