Cita APA

Maclaren, A., & Sikorski, W. (1942). Poland at arms. John Murray.

Citación estilo Chicago

Maclaren, Anna, y Wladyslaw Sikorski. Poland at Arms. London: John Murray, 1942.

Cita MLA

Maclaren, Anna, y Wladyslaw Sikorski. Poland at Arms. John Murray, 1942.