Allum, T. (1959). Emperor of space. Blackie.
Cita Chicago (17th ed.)Allum, Tom. Emperor of Space. Londres: Blackie, 1959.
Cita MLA (9th ed.)Allum, Tom. Emperor of Space. Blackie, 1959.
Atenció: Aquestes cites poden no estar 100% correctes.
Cita APA (7th ed.)