Marcos, F. E. (1967). Extemporaneous speech at the Annual Seminar of the Philippine Historical Association, FEU, 29 November 1967.
芝加哥风格引文Marcos, Ferdinand E. Extemporaneous Speech at the Annual Seminar of the Philippine Historical Association, FEU, 29 November 1967. 1967.
MLA引文Marcos, Ferdinand E. Extemporaneous Speech at the Annual Seminar of the Philippine Historical Association, FEU, 29 November 1967. 1967.
警告：这些引文格式不一定是100％准确.