Punitha, S. (2008). Spoken English: A foundation course (With CD)- Part I. Orient Longman.
芝加哥风格引文Punitha, Susheela. Spoken English: A Foundation Course (With CD)- Part I. Hyderabad: Orient Longman, 2008.
MLA引文Punitha, Susheela. Spoken English: A Foundation Course (With CD)- Part I. Orient Longman, 2008.
警告：这些引文格式不一定是100％准确.