Cita APA (7a ed.)

Harmel, L., & Crawford, V. M. A key to labour problems: Being an adapted translation of the catéchisme du patron / by León Harmel, with at introduction by Virginia M. Crawford.

Cita Chicago Style (17a ed.)

Harmel, León, y Virginia M. Crawford. A Key to Labour Problems: Being an Adapted Translation of the Catéchisme Du Patron / by León Harmel, with at Introduction by Virginia M. Crawford. London : Catholic Truth Society, 21 Westminister Bridge Road, S. E.; 245 Brompton Road, S. W.; 22 Paternoster Row, E. C., 1896.

Cita MLA (8a ed.)

Harmel, León, y Virginia M. Crawford. A Key to Labour Problems: Being an Adapted Translation of the Catéchisme Du Patron / by León Harmel, with at Introduction by Virginia M. Crawford.