APA (7th ed.) Citation

Roman, C. A. (1969). Secretos del cosmos. Salvat [etc.].

Chicago Style (17th ed.) Citation

Roman, Colin A. Secretos Del Cosmos. Barcelona [etc.]: Salvat [etc.], 1969.

MLA (9th ed.) Citation

Roman, Colin A. Secretos Del Cosmos. Salvat [etc.], 1969.

Warning: These citations may not always be 100% accurate.