Seales, J. E. (1967). A system for instruction. International Textbook.
芝加哥风格引文Seales, John E. A System for Instruction. Scranton: International Textbook, 1967.
MLA引文Seales, John E. A System for Instruction. International Textbook, 1967.
警告：这些引文格式不一定是100％准确.