Sering, T. A. (1976). Population education knowledge of the elementary school teachers.
Cita Chicago (17th ed.)Sering, Tomasita Arreza. Population Education Knowledge of the Elementary School Teachers. 1976.
Cita MLA (9th ed.)Sering, Tomasita Arreza. Population Education Knowledge of the Elementary School Teachers. 1976.
Atenció: Aquestes cites poden no estar 100% correctes.