APA (7 वां संस्करण) प्रशस्ति पत्र
Nyabeta, N. E. (2016). Assessment on the effects of ISO 9001: 2008 certification in enhancing service delivery in Kenyan parastatals. Daystar.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र
Nyabeta, Nyangweso Eucabeth. Assessment on the Effects of ISO 9001: 2008 Certification in Enhancing Service Delivery in Kenyan Parastatals. Nairobi: Daystar, 2016.
एमएलए (9वां संस्करण) प्रशस्ति पत्र
Nyabeta, Nyangweso Eucabeth. Assessment on the Effects of ISO 9001: 2008 Certification in Enhancing Service Delivery in Kenyan Parastatals. Daystar, 2016.
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