edited by Richard M. Bird and Oliver Oldman
John Hopkins, 1967
Buku Teks
edited by Richard M. Bird and Oliver Oldman
Johns Hopkins Press, 1964
Buku Teks
edited by Richard M. Bird
John Hopkins University Press, 1975
Buku Teks
edited by David Newbery, Nicholas Stern
Oxford University Press, 1987
Buku Teks
Prentice-Hall, 1969
Buku Teks