APA (7 ম সংস্করণ) উদ্ধৃতি

WILLIAMS WALTER. (1988). STUDYING IMPLEMENTATION METHODOLOGICAL AND ADMINISTRATIVE ISSUES. POPULAR PRAKASHAN.

শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতি

WILLIAMS WALTER. STUDYING IMPLEMENTATION METHODOLOGICAL AND ADMINISTRATIVE ISSUES. BOMBAY: POPULAR PRAKASHAN, 1988.

M.L.A (9 ম সংস্করণ) উদ্ধৃতি

WILLIAMS WALTER. STUDYING IMPLEMENTATION METHODOLOGICAL AND ADMINISTRATIVE ISSUES. POPULAR PRAKASHAN, 1988.