2012 References Programmable Web, http://www.programmableweb.com/ Outubro 2014 How to Design a Good API and Why it Matters, http://lcsd05.cs.tamu.edu/slides/keynote.pdf Outubro 2014 Implementing API Content Negotiation, http://apiux.com/2013/05/07/api-content-negotiation/ Maio 2013 5 reason why developer are not using your API, http://nordicapis.com/5-reasons-why-developers-are-not-using-your-api/ Outubro 2014