GUPTA R K. (1996). RAPIDEX ENGLISH SPEAKING COURSE (HINDI). PUSTAK MAHAL.
Cita Chicago (17th ed.)GUPTA R K. RAPIDEX ENGLISH SPEAKING COURSE (HINDI). DELHI: PUSTAK MAHAL, 1996.
Cita MLA (9th ed.)GUPTA R K. RAPIDEX ENGLISH SPEAKING COURSE (HINDI). PUSTAK MAHAL, 1996.
Atenció: Aquestes cites poden no estar 100% correctes.