APA引文

Langevich, H. Letter, To: Sister Olya From: Mother Helena Langevich, [n.d.].

Chicago Style (17th ed.) Citation

Langevich, Helena. Letter, To: Sister Olya From: Mother Helena Langevich, [n.d.].

MLA引文

Langevich, Helena. Letter, To: Sister Olya From: Mother Helena Langevich, [n.d.].

警告：这些引文格式不一定是100％准确.