Rickaby, S., & Steve Rickaby. (2007). Pass ECDL in 30 steps. London: Thomson.
Trích dẫn kiểu ChicagoRickaby, Steve, và Steve Rickaby. Pass ECDL in 30 Steps. London: Thomson, 2007.
MLA引文Rickaby, Steve, và Steve Rickaby. Pass ECDL in 30 Steps. London: Thomson, 2007.
警告:这些引文格式不一定是100%准确.