APA (7th ed.) Citation

Clarke, A. C. (1970). Space the unconquerable. Lake House.

Chicago Style (17th ed.) Citation

Clarke, Arthur C. Space the Unconquerable. Colombo: Lake House, 1970.

MLA (9th ed.) Citation

Clarke, Arthur C. Space the Unconquerable. Lake House, 1970.

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