Viśvambharan, E. (1980). Nārāyaṇaguru: Jīvacaritṟaṃ. Sāhityapṟavarttaka Sahakaraṇasaṅghaṃ : Nāṣanal Bukksṯāḷ.
Lua i Stíl Chicago (17ú heag.)Viśvambharan, Eṃ. Nārāyaṇaguru: Jīvacaritṟaṃ. Kōṭṭayaṃ: Sāhityapṟavarttaka Sahakaraṇasaṅghaṃ : Nāṣanal Bukksṯāḷ, 1980.
Lua MLA (8ú heag.)Viśvambharan, Eṃ. Nārāyaṇaguru: Jīvacaritṟaṃ. Sāhityapṟavarttaka Sahakaraṇasaṅghaṃ : Nāṣanal Bukksṯāḷ, 1980.
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