title:Yearbook of International Organizations - Vol 4: Bibliographic volume: international organization bibliography and resources
1st edition. Volume 4 of 4 volumes. Also available on CD-ROM, 2nd edition
title:Yearbook of International Organizations - Vol 3: Global action networks: classified directory and index
14th edition. Volume 3 of 4 volumes. Also available on CD-ROM, 2nd edition
title:Yearbook of International Organizations - Vol 2: Geographic volume: international organization participation; country directory of secretariats and membership
14th edition. Volume 2 of 4 volumes. Also available on CD-ROM, 2nd edition
title:Yearbook of International Organizations - Vol 1: Organization Descriptions and Cross-References
33rd edition. Volume 1 of 4 volumes. Also available on CD-ROM, 2nd edition
title:World Guide to Religious and Spiritual Organizations
title:International Congress Calendar
36th edition, 4 volumes
title:Who's Who in International Organizations: a biographical encyclopedia of more than 13,000 leading personalities
2nd edition, 3 volumes
title:Yearbook of International Organizations - Vol 3: Subject volume: global action networks; classified directory and index
13th edition. Volume 3 of 3 volumes. Also available on CD-ROM, 1st edition
title:Yearbook of International - Vol 2: Geographic Volume: international organization participation; country directory of secretariats and membership
13th edition. Volume 2 of 3 volumes. Also available on CD-ROM, 1st edition