Oppong, C., & Abu, K. (1987). Seven roles of women: Impact of education, migration and employment on Ghanaian mothers. International Labour Office.
Chicago-referens (17:e uppl.)Oppong, Christine, och Katharine Abu. Seven Roles of Women: Impact of Education, Migration and Employment on Ghanaian Mothers. Geneva: International Labour Office, 1987.
MLA-referens (9:e uppl.)Oppong, Christine, och Katharine Abu. Seven Roles of Women: Impact of Education, Migration and Employment on Ghanaian Mothers. International Labour Office, 1987.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.