Battle, E. S. (1967). Achievement values, standards and expectations: Their effect on children's task persistence and academic competence. University Microfilms.
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিBattle, Esther Steinhauer. Achievement Values, Standards and Expectations: Their Effect on Children's Task Persistence and Academic Competence. [Ann Arbor, Mich: University Microfilms, 1967.
M.L.A (9 ম সংস্করণ) উদ্ধৃতিBattle, Esther Steinhauer. Achievement Values, Standards and Expectations: Their Effect on Children's Task Persistence and Academic Competence. University Microfilms, 1967.
সতর্কবাণী: সাইটেশন সবসময় 100% নির্ভুল হতে পারে না.