Cita APA

Keyhoe, D. E. (1953). Flying saucers from outer space.

Chicago Edition Citation

Keyhoe, Donald E. Flying Saucers from Outer Space. 1953.

Cita MLA

Keyhoe, Donald E. Flying Saucers from Outer Space. 1953.

Atenció: Aquestes cites poden no estar 100% correctes.