Gaya APA

L.G.Alexander, ., Folkes, M. (2003). Developing Skills : An Integrated Course for Intermediate Students / L.G.Alexander (cet.23). London: Longman.

Gaya MLA

L.G.Alexander, ., Folkes, Michael. "Developing Skills : An Integrated Course for Intermediate Students / L.G.Alexander". cet.23 London: Longman, 2003. Text.