GUPTA R K. (1996). RAPIDEX ENGLISH SPEAKING COURSE (HINDI). PUSTAK MAHAL.
Chicago-čujuhus (17. p.)GUPTA R K. RAPIDEX ENGLISH SPEAKING COURSE (HINDI). DELHI: PUSTAK MAHAL, 1996.
MLA-čujuhus (9. p.)GUPTA R K. RAPIDEX ENGLISH SPEAKING COURSE (HINDI). PUSTAK MAHAL, 1996.
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