Pol, J., Fisher, D., & Perkins, T. (2014). Never turn your back on an Angus cow: My life as a country vet (Unabridged.). Tantor Media, Inc..
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रPol, Jan, David Fisher, और Tom Perkins. Never Turn Your Back on an Angus Cow: My Life as a Country Vet. Unabridged. [Old Saybrook, Ct.]: Tantor Media, Inc., 2014.
एमएलए (8वां संस्करण) प्रशस्ति पत्रPol, Jan, et al. Never Turn Your Back on an Angus Cow: My Life as a Country Vet. Unabridged. Tantor Media, Inc., 2014.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.