APA
Firth J. R., . (1957). Papers in linguistics 1934-1951. London: Oxford University Press.
Chicago
Firth J R, . 1957. Papers in linguistics 1934-1951. London: Oxford University Press.
Harvard
Firth J. R., . (1957). Papers in linguistics 1934-1951. London: Oxford University Press.
MLA
Firth J R, . Papers in linguistics 1934-1951. London: Oxford University Press. 1957.