Bolenius, E. M. (1929). Teachers' manual for fourth, fifth, and sixth grades (Revised edition.). Houghton Mifflin Company ; The Riverside Press.
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিBolenius, Emma Miller. Teachers' Manual for Fourth, Fifth, and Sixth Grades. Revised edition. Boston ; New York ; Chicago ; Dallas ; San Francisco : Cambridge, Massachusetts: Houghton Mifflin Company ; The Riverside Press, 1929.
M.L.A (8 ম সংস্করণ) উদ্ধৃতিBolenius, Emma Miller. Teachers' Manual for Fourth, Fifth, and Sixth Grades. Revised edition. Houghton Mifflin Company ; The Riverside Press, 1929.
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