APA (7th ed.) Citation

Portela, J. P. P. d. C. (2012). Multi-touch interaction for interface prototyping.

Chicago Style (17th ed.) Citation

Portela, João Pedro Pereira da Costa. Multi-touch Interaction for Interface Prototyping. 2012.

MLA (8th ed.) Citation

Portela, João Pedro Pereira da Costa. Multi-touch Interaction for Interface Prototyping. 2012.

Warning: These citations may not always be 100% accurate.