Cite
DIRECT Distances to Nearby Galaxies Using Detached Eclipsing Binaries and Cepheids. VI. Variables in the Central Part of M33Based on observations collected at the Fred L. Whipple Observatory 1.2 m telescope and at the Michigan-Dartmouth-MIT 1.3 m telescope.
MLA
Macri, L. M., et al. “DIRECT Distances to Nearby Galaxies Using Detached Eclipsing Binaries and Cepheids. VI. Variables in the Central Part of M33Based on Observations Collected at the Fred L. Whipple Observatory 1.2 m Telescope and at the Michigan-Dartmouth-MIT 1.3 m Telescope.” Astronomical Journal, vol. 121, no. 2, Feb. 2001, pp. 870–90. EBSCOhost, https://doi.org/10.1086/318773.
APA
Macri, L. M., Stanek, K. Z., Sasselov, D. D., Krockenberger, M., & Kaluzny, J. (2001). DIRECT Distances to Nearby Galaxies Using Detached Eclipsing Binaries and Cepheids. VI. Variables in the Central Part of M33Based on observations collected at the Fred L. Whipple Observatory 1.2 m telescope and at the Michigan-Dartmouth-MIT 1.3 m telescope. Astronomical Journal, 121(2), 870–890. https://doi.org/10.1086/318773
Chicago
Macri, L. M., K. Z. Stanek, D. D. Sasselov, M. Krockenberger, and J. Kaluzny. 2001. “DIRECT Distances to Nearby Galaxies Using Detached Eclipsing Binaries and Cepheids. VI. Variables in the Central Part of M33Based on Observations Collected at the Fred L. Whipple Observatory 1.2 m Telescope and at the Michigan-Dartmouth-MIT 1.3 m Telescope.” Astronomical Journal 121 (2): 870–90. doi:10.1086/318773.