Dyfyniad APA
Pietilä, P., Doró, K., & Pípalová, R. (2015). Lexical issues in L2 writing. Cambridge Scholars Publishing.
Dyfyniad Arddull Chicago
Pietilä, Päivi, Katalin Doró, and Renata Pípalová. Lexical Issues in L2 Writing. Newcastle-upon-Tyne, England: Cambridge Scholars Publishing, 2015.
Dyfyniad MLA
Pietilä, Päivi, et al. Lexical Issues in L2 Writing. Cambridge Scholars Publishing, 2015.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.