Villefranche, J. M., & Martin, L. Life of Don Bosco: Founder of the Salesian Society (2nd ed.). Burns & Oates ; Catholic Publication Society.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रVillefranche, Jacques Melchior, और Lady Martin. Life of Don Bosco: Founder of the Salesian Society. 2nd ed. London : New York: Burns & Oates ; Catholic Publication Society.
एमएलए (8वां संस्करण) प्रशस्ति पत्रVillefranche, Jacques Melchior, और Lady Martin. Life of Don Bosco: Founder of the Salesian Society. 2nd ed. Burns & Oates ; Catholic Publication Society.
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