Ward, T. (1971). Programmed instruction for theological education by extension (2ª ed.). Cameo.
芝加哥风格引文Ward, Ted. Programmed Instruction for Theological Education by Extension. 2ª ed. Cameo, 1971.
MLA引文Ward, Ted. Programmed Instruction for Theological Education by Extension. 2ª ed. Cameo, 1971.
警告：这些引文格式不一定是100％准确.