Cita APA (7a ed.)
Williamson, J. The Legion of Space. Pyramid Books.
Cita estilo Chicago (17a ed.)
Williamson, Jack. The Legion of Space. Nueva York, EUA: Pyramid Books.
Cita MLA (9a ed.)
Williamson, Jack. The Legion of Space. Pyramid Books.
警告：這些引文格式不一定是100％准確.