Fajardo, F. R., & Abella, F. P. (1996). Cooperatives (4th ed.). Rex Book Store.
Lua i Stíl Chicago (17ú heag.)Fajardo, Feliciano R., agus Fabian P. Abella. Cooperatives. 4th ed. Manila: Rex Book Store, 1996.
Lua MLA (9ú heag.)Fajardo, Feliciano R., agus Fabian P. Abella. Cooperatives. 4th ed. Rex Book Store, 1996.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.