APA (7 ম সংস্করণ) উদ্ধৃতি

National Library (Singapore). Young People's Service. (1993). Window to the sky. Young People's Service, National Library, Singapore, Macmillan/McGraw-Hill.

শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতি

National Library (Singapore). Young People's Service. Window to the Sky. Singapore : New York: Young People's Service, National Library, Singapore, Macmillan/McGraw-Hill, 1993.

M.L.A (8 ম সংস্করণ) উদ্ধৃতি

National Library (Singapore). Young People's Service. Window to the Sky. Young People's Service, National Library, Singapore, Macmillan/McGraw-Hill, 1993.