Kissler-Patig, M., Grebel, E. K., & Wagner, S. (1994). The globular cluster system of NGC 4636: A rich system in an otherwise normal elliptical galaxy? Astronomy and astrophysics, 287(2), .
Chicago Style (17th ed.) CitationKissler-Patig, Markus, Eva K. Grebel, and Stefan Wagner. "The Globular Cluster System of NGC 4636: A Rich System in an Otherwise Normal Elliptical Galaxy?" Astronomy and Astrophysics 287, no. 2 (1994).
MLA (9th ed.) CitationKissler-Patig, Markus, et al. "The Globular Cluster System of NGC 4636: A Rich System in an Otherwise Normal Elliptical Galaxy?" Astronomy and Astrophysics, vol. 287, no. 2, 1994.
Warning: These citations may not always be 100% accurate.