ONWUEGBUZIE, A. J., & FRELS, R. (2016). 7 steps to a comprehensive literature review: A multimodal & cultural approach. Sage.
Lua i Stíl Chicago (17ú heag.)ONWUEGBUZIE, Anthony J., agus Rebecca FRELS. 7 Steps to a Comprehensive Literature Review: A Multimodal & Cultural Approach. Sage, 2016.
Lua MLA (8ú heag.)ONWUEGBUZIE, Anthony J., agus Rebecca FRELS. 7 Steps to a Comprehensive Literature Review: A Multimodal & Cultural Approach. Sage, 2016.
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