Boff, C., Orpilla, D. R., & San Diego, T. C. (1988). How to work with people (English ed.). Claretian Publications.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रBoff, Clodovis, Daniel R. Orpilla, और Tessa Cruz San Diego. How to Work with People. English ed. Quezon City: Claretian Publications, 1988.
एमएलए (9वां संस्करण) प्रशस्ति पत्रBoff, Clodovis, et al. How to Work with People. English ed. Claretian Publications, 1988.
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