¶«Ò°¹çÎá & ÕÔ½. (2020). ÐÅ: Letters. ±±¾©ÁªºÏ³ö°æ¹«Ë¾.
Chicago Style aipamena¶«Ò°¹çÎá and ÕÔ½. ÐÅ: Letters. ±±¾©ÁªºÏ³ö°æ¹«Ë¾, 2020.
MLA aipamena¶«Ò°¹çÎá and ÕÔ½. ÐÅ: Letters. ±±¾©ÁªºÏ³ö°æ¹«Ë¾, 2020.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.