Alan J. Shusterman and Gwendolyn P. Shusterman (1997). "Teaching Chemistry with Electron Density Models". The Journal of Chemical Education. ACS Publications. 74 (7): 771–775. Bibcode:1997JChEd..74..771S. doi:10.1021/ed074p771.Pemeliharaan CS1: Menggunakan parameter penulis (link)
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Alan J. Shusterman and Gwendolyn P. Shusterman (1997). "Teaching Chemistry with Electron Density Models". The Journal of Chemical Education. ACS Publications. 74 (7): 771–775. Bibcode:1997JChEd..74..771S. doi:10.1021/ed074p771.Pemeliharaan CS1: Menggunakan parameter penulis (link)