"Volcán Popocatépetl, Mexico". Peakbagger.com. The prominence value given here of 3,020 m (9,91 ft) is interpolated from a summit elevation of 5,400 m (17,72 ft) for Popocatépetl.
peaklist.org
"Mexico Ultras". Peaklist.org. Diakses tanggal 2012-01-29. The prominence value given here of 3.020 m (9.910 ft) is based on a summit elevation of 5.400 m (17.700 ft) for Popocatépetl.
