| GOST | Helgardt R. О литературном языке в географической проекции // Voprosy Jazykoznanija. – 1959. – Issue 3 C. 95-101 . |
|---|---|
| MLA | Helgardt, R. "О литературном языке в географической проекции." Voprosy Jazykoznanija. 3 (1959).:95-101. |
| APA | Helgardt R. (1959). О литературном языке в географической проекции. Voprosy Jazykoznanija. no. 3, pp.95-101 |
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