Villanueva, P. M., & Aranzaso, R. C. (2010). Improving your English skills. Books Atbp.
芝加哥风格引文Villanueva, Perla M., 与 Roberta C. Aranzaso. Improving Your English Skills. Mandaluyong City: Books Atbp, 2010.
MLA引文Villanueva, Perla M., 与 Roberta C. Aranzaso. Improving Your English Skills. Books Atbp, 2010.
警告：这些引文格式不一定是100％准确.