المؤلفون: Metz, Thaddeus, author

المصدر: A Relational Moral Theory : African Ethics in and beyond the Continent, 2021.

الإتاحة: https://doi.org/10.1093/oso/9780198748960.003.0010

المؤلفون: Savitz, David A., author, Wellenius, Gregory A., author

المصدر: Interpreting Epidemiologic Evidence : Connecting Research to Applications, 2016, ill.

الإتاحة: https://doi.org/10.1093/acprof:oso/9780190243777.003.0009