Wright, Philip G.
Trade and tariffs of certain pacific countries / by Philip G. Wright
Institute of Pacific Relations, 1933
 Buku Teks
Effective tariff protection : proceedings of conference sponsored by the general agreement on tariff and trade / editor, Herbert G. Grubel, Harry G. Johnson
General Agreement on Tariffs and trade, 1971
 Buku Teks
Journal of the American oriental society
New Slaven : American Oriental Society
 Majalah, Jurnal, Buletin
Gill, Philip E.
Practical optimization/Philip E. Gill, Walter Murray, Margaret H. Wright
Academic Press , 1981
 Buku Teks
Wernette, Philip
The Future of American prosperity / Philip Wernette
Macmillan, 1955
 Buku Teks