Gaya APA
Resource Sharing book, programmes/projects and service. Ada: 1983-1989, 1990-1992, 1993, 1994, 1995, 1996, 1997 . ( 1982- ).
Geneva:
WCC.
Gaya MLA
Resource Sharing book, programmes/projects and service. Ada: 1983-1989, 1990-1992, 1993, 1994, 1995, 1996, 1997 .
.
Geneva:
WCC,
1982- .
Buku.