Kopal, Z. (1970). Telescopes in space. Hart Publishing.
Chicago Style (17th ed.) CitationKopal, Zedenek. Telescopes in Space. New York: Hart Publishing, 1970.
MLA (9th ed.) CitationKopal, Zedenek. Telescopes in Space. Hart Publishing, 1970.
Warning: These citations may not always be 100% accurate.