Langevich, H. Letter, To: Sister Olya From: Mother Helena Langevich, [n.d.].
Chicago (17e ed.) BronvermeldingLangevich, Helena. Letter, To: Sister Olya From: Mother Helena Langevich, [n.d.].
MLA (8e ed.) BronvermeldingLangevich, Helena. Letter, To: Sister Olya From: Mother Helena Langevich, [n.d.].
Let op: Deze citaties zijn niet altijd 100% accuraat.