Velayo, R. M. (1958). Philippine citizenship and naturalization. A. Saguil.
芝加哥风格引文Velayo, Ramon M. Philippine Citizenship and Naturalization. San Juan, Rizal: A. Saguil, 1958.
MLA引文Velayo, Ramon M. Philippine Citizenship and Naturalization. A. Saguil, 1958.
警告：这些引文格式不一定是100％准确.