India. Parliament. Committee on Public Undertakings & Lal, B. (1981). Report on Hindustan Teleprinters Ltd.: New projects, Ministry of Communications : presented to Lok Sabha on 23.12.1981 and laid in Rajya Sabha on 23.12.1981. Lok Sabha Secretariat.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)India. Parliament. Committee on Public Undertakings و Bansi Lal. Report on Hindustan Teleprinters Ltd.: New Projects, Ministry of Communications : Presented to Lok Sabha on 23.12.1981 and Laid in Rajya Sabha on 23.12.1981. New Delhi: Lok Sabha Secretariat, 1981.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)India. Parliament. Committee on Public Undertakings و Bansi Lal. Report on Hindustan Teleprinters Ltd.: New Projects, Ministry of Communications : Presented to Lok Sabha on 23.12.1981 and Laid in Rajya Sabha on 23.12.1981. Lok Sabha Secretariat, 1981.