Langevich, H. Letter, To: Sister Olya From: Mother Helena Langevich, [n.d.].
Chicago Style (17th ed.) CitationLangevich, 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:這些引文格式不一定是100%准確.