APA (7th ed.) Citation

Roy, A. E., & Clarke, D. (1978). Astronomy: Structure of the universe (Repr.). Hilger.

Chicago Style (17th ed.) Citation

Roy, Archie E., and David Clarke. Astronomy: Structure of the Universe. Repr. Bristol: Hilger, 1978.

MLA (9th ed.) Citation

Roy, Archie E., and David Clarke. Astronomy: Structure of the Universe. Repr. Hilger, 1978.

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