Titco, B. . R. (2001). Echoes from the heart. Verbum Domini Pub.
Cita Chicago (17th ed.)Titco, Bobby R. Echoes from the Heart. Manila: Verbum Domini Pub, 2001.
Cita MLA (9th ed.)Titco, Bobby R. Echoes from the Heart. Verbum Domini Pub, 2001.
Atenció: Aquestes cites poden no estar 100% correctes.