Okpa, O. N. (2015). The impact of government policy on the relationship between critical success factors and incubation contributions.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Okpa, Obaji Nkem. The Impact of Government Policy on the Relationship Between Critical Success Factors and Incubation Contributions. 2015.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Okpa, Obaji Nkem. The Impact of Government Policy on the Relationship Between Critical Success Factors and Incubation Contributions. 2015.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.