"2017 NACUBO-Commonfund Study of Endowments"(PDF). National Association of College and University Business Officers (NACUBO). 2017. Diarsipkan dari versi asli(PDF) tanggal March 6, 2018. Diakses tanggal February 4, 2018.
"2017 NACUBO-Commonfund Study of Endowments"(PDF). National Association of College and University Business Officers (NACUBO). 2017. Diarsipkan dari versi asli(PDF) tanggal March 6, 2018. Diakses tanggal February 4, 2018.