Howatt, A. P. R. (1970). Put it in writing: A natural approach to writing English. Oxford University Press.
Chicago-referens (17:e uppl.)Howatt, Anthony Philip Reid. Put It in Writing: A Natural Approach to Writing English. London: Oxford University Press, 1970.
MLA-referens (9:e uppl.)Howatt, Anthony Philip Reid. Put It in Writing: A Natural Approach to Writing English. Oxford University Press, 1970.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.