Cita APA (7a ed.)
Heinlein, R. A. Time for the Stars. Ace Books.
Cita estilo Chicago (17a ed.)
Heinlein, Robert A. Time for the Stars. Nueva York, EUA: Ace Books.
Cita MLA (9a ed.)
Heinlein, Robert A. Time for the Stars. Ace Books.
Advarsel: Disse citationer er muligvist ikke 100% nøjagtige.