* [https://web.archive.org/web/20120218200657/http://volcano.phivolcs.dost.gov.ph/update_VMEPD/Volcano/VolcanoList/apo.htm Philippine Institute of Volcanology and Seismology (PHIVOLCS) Mount Apo Page]
* [http://www.summitpost.org/mountain/rock/483022/mount-apo.html Mount Apo on Summitpost]
* [https://whc.unesco.org/en/tentativelists/5022/ UNESCO Tentative World Heritage List]
* [http://www.malakatoutdoors.org/climbing-mount-apo-our-turn/ Climbing Mount APO, Our Turn]
* [http://www.malakatoutdoors.org/mt-apo-end-expedition/ Mt. APO, the End of an Expedition]
* [https://web.archive.org/web/20150815221200/http://dasocialclimber.com/2014/01/05/kamras-7-mt-apo-via-sta-cruz-boulders/ Mt. Apo: Hiking Through the Boulders and Sulfur Vents]
