King, S.F.
Hart-Orvis Eeducational , 1976
Buku Teks
edited by Allen Cunningham; preface by Robert Maxwell
Routledge, 1998
Buku Teks
Pesetsky, David
MIT Press, 2000
Buku Teks
edited by Ian R. Swingland and Paul J. Greenwood
Clarendon Press, 1983
Buku Teks
Unger, Roberto Mangabeira
Harvard University Press, 1983
Buku Teks