Gaya APA

Davies, J, W., Dunn, I, K. (2011). Communication Skills: A Guide for Engineering and Applied Science Students (3rd Edition). United Kingdom: Pearson Education Limited.

Gaya MLA

Davies, John, W.., Dunn, Ian, K.. "Communication Skills: A Guide for Engineering and Applied Science Students". 3rd Edition United Kingdom: Pearson Education Limited, 2011. Text.