APA (7 वां संस्करण) प्रशस्ति पत्र

Etura, J. E., Amaechi, R. A., Akpotuzor, J. O., & Okoroiwu, H. U. (2020). Demographics of Rhesus Phenotype of Blood Donors in Calabar: A Case Study of University of Calabar Teaching Hospital, Calabar, Cross River State, Nigeria. Hindawi Limited.

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

Etura, Joyce Ezekiel, Rose A. Amaechi, Josephine O. Akpotuzor, और Henshaw Uchechi Okoroiwu. Demographics of Rhesus Phenotype of Blood Donors in Calabar: A Case Study of University of Calabar Teaching Hospital, Calabar, Cross River State, Nigeria. Hindawi Limited, 2020.

एमएलए (9वां संस्करण) प्रशस्ति पत्र

Etura, Joyce Ezekiel, et al. Demographics of Rhesus Phenotype of Blood Donors in Calabar: A Case Study of University of Calabar Teaching Hospital, Calabar, Cross River State, Nigeria. Hindawi Limited, 2020.

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