APA引文

Twaddell, W. F. (1965). The english verb auxilliaries. Brown University Press.

Chicago Style (17th ed.) Citation

Twaddell, William Freeman. The English Verb Auxilliaries. Providence: Brown University Press, 1965.

MLA引文

Twaddell, William Freeman. The English Verb Auxilliaries. Brown University Press, 1965.