Wielen, R. (1976). A galactic mass model composed of a spheroidal halo and an exponential disk. Stars and galaxies from observational points of view.
Chicago Style (17th ed.) CitationWielen, Roland. "A Galactic Mass Model Composed of a Spheroidal Halo and an Exponential Disk." Stars and Galaxies from Observational Points of View 1976.
MLA (9th ed.) CitationWielen, Roland. "A Galactic Mass Model Composed of a Spheroidal Halo and an Exponential Disk." Stars and Galaxies from Observational Points of View, 1976.
Warning: These citations may not always be 100% accurate.