Langevich, H. Letter, To: Sister Olya From: Mother Helena Langevich, [n.d.].
Style de citation Chicago (17e éd.)Langevich, Helena. Letter, To: Sister Olya From: Mother Helena Langevich, [n.d.].
Style de citation MLA (8e éd.)Langevich, Helena. Letter, To: Sister Olya From: Mother Helena Langevich, [n.d.].
Attention : ces citations peuvent ne pas être correctes à 100%.