Crisis,proverty and agriculture in indonesia Peter G.Warr
 Artikel Jurnal
Two blades of grass: rural cooperatives in agricultural modernization / edited by Peter Worsley
edited by Peter Worsley
Manchester University Press, 1971
 Buku Teks SO
Finance : the New Palgrave / edited by John Eatwell, Murray Milgate, Peter Newman
edited by John Eatwell, Murray Milgate and Peter Newman
W.W. Norton, 1989
 Buku Teks SO
Spacecraft systems engineering / edited, Peter Fortescue, John P.W. Stark
edited by Peter Fortescue and John P.W. Stark
John Wiley & Sons, 1992
 Buku Teks SO
Jähne, Johannes
Construction of roads and tracks in rural areas
Leipzig, 1964
 Buku Teks SO