Ecumenical Institute for Labor Education and Research (Philippines) & Doloricon, N. (1987). GTU: Kurso sa tunay na unyonismo. Ecumenical Institute for Labor Education and Research (EILER).
Chicago-referens (17:e uppl.)Ecumenical Institute for Labor Education and Research (Philippines) och Neil Doloricon. GTU: Kurso Sa Tunay Na Unyonismo. Quezon City: Ecumenical Institute for Labor Education and Research (EILER), 1987.
MLA-referens (9:e uppl.)Ecumenical Institute for Labor Education and Research (Philippines) och Neil Doloricon. GTU: Kurso Sa Tunay Na Unyonismo. Ecumenical Institute for Labor Education and Research (EILER), 1987.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.