Functional heads. Oxford University Press.
Chicago Style (17th ed.) CitationFunctional Heads. Oxford University Press.
MLA引文Functional Heads. Oxford University Press.
警告：這些引文格式不一定是100％准確.
APA引文
Functional heads. Oxford University Press.
Chicago Style (17th ed.) CitationFunctional Heads. Oxford University Press.
MLA引文Functional Heads. Oxford University Press.