Shields, Patricia and Rangarjan, N. 2013. A Playbook for Research Methods[liên kết hỏng]: Integrating Conceptual Frameworks and Project Management. Stillwater, OK: New Forums Press. (See Chapter 5 "Exploration - Working Hypotheses" pp. 109-158)
National Research Council (US) Committee to Update Science, Medicine (2004). The Concept of Basic Research (bằng tiếng Anh). National Academies Press (US).
Roll-Hansen, Nils (tháng 4 năm 2009). Why the distinction between basic (theoretical) and applied (practical) research is important in the politics of science (Bản báo cáo). The London School of Economics and Political Science. S2CID16100857.
