Useful citizens in action a textbook in character education and citizenship training. (Quezon City Alemar-Phoenix, 1969)
v.1-2 by Macario Naval and Marietta Garces.-- v.3-5 by Romas C. Tuason, Ernesto S. Pangalangan and Conchita A. Tan.-- v.6 by Josephine B. Serrano and Macario Naval.
Keywords: Moral education