Cita APA (7a ed.)

RIDPATH, I. (1982). Hamlyn encyclopedia of space. Hamlyn.

Cita Chicago Style (17a ed.)

RIDPATH, Ian. Hamlyn Encyclopedia of Space. London: Hamlyn, 1982.

Cita MLA (9a ed.)

RIDPATH, Ian. Hamlyn Encyclopedia of Space. Hamlyn, 1982.