Kern, Roy F.
Steel selection/Roy F Steel, Manfred E.Suess
John Wiley & Sons, 1979
 Buku Teks
Yafhet Titus
Programasi poer pondasi tiang pancang
1996
 UI - Skripsi Membership
Ellen, Roy F.
Nuaulu settlement and ecology : an approach to the environmental relations of an Eastern Indonesian community / Roy F. Ellen
Martinus Nijhoff, 1978
 Buku Teks
Dickens, Charles, 1812-1870
Nicholas nickleby
Everyman`s Library, 1993
 Buku Teks
Dickens, Charles, 1812-1870
Nicholas Nickleby and Mr. Squeers : from Nicholas Nickleby
Longman, Green, 1949
 Buku Teks