John Kunnappalli. (1972). Prakriya bhashyam. National Bookstall.
Chicago Edition CitationJohn Kunnappalli. Prakriya Bhashyam. Kottayam: National Bookstall, 1972.
MLA Edition CitationJohn Kunnappalli. Prakriya Bhashyam. National Bookstall, 1972.
Warning: These citations may not always be 100% accurate.