APA (7th ed.) Citation

Leonard, G. H. (1981). Alien quest. Sphere Books.

Chicago Style (17th ed.) Citation

Leonard, George H. Alien Quest. London: Sphere Books, 1981.

MLA (8th ed.) Citation

Leonard, George H. Alien Quest. Sphere Books, 1981.

Advarsel: Disse citationer er muligvist ikke 100% nøjagtige.