APA-referens (7:e uppl.)

Helft, M. Tech class that shook an industry: How a project on apps led to lean start-ups. Manila bulletin.

Chicago-referens (17:e uppl.)

Helft, Miguel. "Tech Class That Shook an Industry: How a Project on Apps Led to Lean Start-ups." Manila Bulletin .

MLA-referens (9:e uppl.)

Helft, Miguel. "Tech Class That Shook an Industry: How a Project on Apps Led to Lean Start-ups." Manila Bulletin, .

Varning: dessa hänvisningar är inte alltid fullständigt riktiga.