- Author: ILO-CEET (editor)
- Language: English
- Year: 1995
- Author: Patricía Trindade Maranhão Costa, International Labour Organisation (ILO)
- Language: English
- Year: 2009
- Author: Stan Chu Ilo, Esther Acolatse
- Language: English
- Year: 2017
- Author: Tef̤ilo Altamirano Rua
- Language: Spanish
- Author: Tim Byrnes Ebubechukwu O. Ilo-Okeke
- Language: English
- Year: 2021
- Author: Tim Byrnes Ebubechukwu O. Ilo-Okeke
- Language: English
- Year: 2021