APA (7 ম সংস্করণ) উদ্ধৃতি

Langevich, H. Letter, To: Sister Olya From: Mother Helena Langevich, December 10, 1915.

শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতি

Langevich, Helena. Letter, To: Sister Olya From: Mother Helena Langevich, December 10, 1915.

M.L.A (8 ম সংস্করণ) উদ্ধৃতি

Langevich, Helena. Letter, To: Sister Olya From: Mother Helena Langevich, December 10, 1915.