A journal I have read based on my field is called Web Pages Content Analysis using Browser based volunteer computing and the APA citing is as follow:
Turek, W., Nawarecki, E., Dobrowolski, G., Krupa, T., & Majewski, P. (2013). WEB PAGES CONTENT ANALYSIS USING BROWSER-BASED VOLUNTEER COMPUTING. Computer Science, 14(2), 215. doi:10.7494/csci.2013.14.2.215
An online article cited in APA and adopted from Washington Post is Meeri Kim Published on (2013, September 25). Scientists create first carbon nanotube computer. Retrieved from http://www.washingtonpost.com/national/health-science/scientists-create-first-carbon-nanotube-computer/2013/09/25/74e631cc-25fb-11e3-ad0d-b7c8d2a594b9_story.html.
Citation from a book i have read based on my field is computer science using java book :
Sarmenta L. F. G., Hirano S.: Bayanihan: Building and Studying Volunteer Computing Systems Using Java. Future Generation Computer Systems Special Issue on Metacomputing, vol. 15, no. 5/6. Elsevier Published, 1999.