APA (7e ed.) Bronvermelding

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

Chicago (17e ed.) Bronvermelding

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

MLA (8e ed.) Bronvermelding

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

Let op: Deze citaties zijn niet altijd 100% accuraat.