Spitzer, H., Mabeyo, Z. M., & Rosenmayr, L. (2011). In search of protection: Older people and their fight for survival in Tanzania. Mkuki na Nyota Publishers : Drava.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रSpitzer, Helmut, Zena Mnasi Mabeyo, और Leopold Rosenmayr. In Search of Protection: Older People and Their Fight for Survival in Tanzania. Dar es Salaam, Tanzania: Mkuki na Nyota Publishers : Drava, 2011.
एमएलए (9वां संस्करण) प्रशस्ति पत्रSpitzer, Helmut, et al. In Search of Protection: Older People and Their Fight for Survival in Tanzania. Mkuki na Nyota Publishers : Drava, 2011.
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