Hellman, C. D. (1971). The comet of 1577: Its place in the history of astronomy (1. AMS ed., repr. from the ed. of 1944, New York.). AMS Press.
Chicago-Zitierstil (17. Ausg.)Hellman, Clarisse Doris. The Comet of 1577: Its Place in the History of Astronomy. 1. AMS ed., repr. from the ed. of 1944, New York. New York: AMS Press, 1971.
MLA-Zitierstil (9. Ausg.)Hellman, Clarisse Doris. The Comet of 1577: Its Place in the History of Astronomy. 1. AMS ed., repr. from the ed. of 1944, New York. AMS Press, 1971.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.