Mathews, F. S. (1967). Field book of wild birds and their music: A discription of the character and music of birds, intended to assist in the identification of species common in the United States East of the Rocky Mountains. Dover Publications.
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিMathews, Ferdinand Schuyler. Field Book of Wild Birds and Their Music: A Discription of the Character and Music of Birds, Intended to Assist in the Identification of Species Common in the United States East of the Rocky Mountains. New York: Dover Publications, 1967.
M.L.A (9 ম সংস্করণ) উদ্ধৃতিMathews, Ferdinand Schuyler. Field Book of Wild Birds and Their Music: A Discription of the Character and Music of Birds, Intended to Assist in the Identification of Species Common in the United States East of the Rocky Mountains. Dover Publications, 1967.