APA (7th ed.) Citation

Perina, S. <., & Ferraro, F. R. (2010). Young and old star clusters in M31: An HST view. Alma Mater Studiorum - Università di Bologna.

Chicago Style (17th ed.) Citation

Perina, Sibilla <1970>, and Francesco Rosario Ferraro. Young and Old Star Clusters in M31: An HST View. Alma Mater Studiorum - Università di Bologna, 2010.

MLA (8th ed.) Citation

Perina, Sibilla <1970>, and Francesco Rosario Ferraro. Young and Old Star Clusters in M31: An HST View. Alma Mater Studiorum - Università di Bologna, 2010.

Warning: These citations may not always be 100% accurate.