Kissler-Patig, M., & Grebel, E. K. (1994). NGC 4636: A rich globular cluster system in a normal elliptical galaxy. The ESO messenger, 73(?), .
Chicago Style (17th ed.) CitationKissler-Patig, Markus, and Eva K. Grebel. "NGC 4636: A Rich Globular Cluster System in a Normal Elliptical Galaxy." The ESO Messenger 73, no. ? (1994).
MLA (9th ed.) CitationKissler-Patig, Markus, and Eva K. Grebel. "NGC 4636: A Rich Globular Cluster System in a Normal Elliptical Galaxy." The ESO Messenger, vol. 73, no. ?, 1994.
Warning: These citations may not always be 100% accurate.