Cita APA

Manniche, P. (1939). Denmark, a social laboratory. Gad [u.a.].

Citación estilo Chicago

Manniche, Peter. Denmark, a Social Laboratory. Copenhagen [u.a.]: Gad [u.a.], 1939.

Cita MLA

Manniche, Peter. Denmark, a Social Laboratory. Gad [u.a.], 1939.