Wallace, B. J. (1996). Good roots = Ugat ng buhay: Helping farmers reclaim their environment. Caltex (Philippines).
Chicago-Zitierstil (17. Ausg.)Wallace, Ben J. Good Roots = Ugat Ng Buhay: Helping Farmers Reclaim Their Environment. [Makati City]: Caltex (Philippines), 1996.
MLA-Zitierstil (9. Ausg.)Wallace, Ben J. Good Roots = Ugat Ng Buhay: Helping Farmers Reclaim Their Environment. Caltex (Philippines), 1996.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.