Cao, T. H. C., & Cao Thi Hong Cam; Lilibeth S. Tindugan. (2019). Beliefs and practices of primary teachers on language learning strategies in teaching english as a foreign language: A dissertation presented to the faculty of the graduate school Southern Leyte State University - College of Teacher Education San Isidro, Tomas Oppus, Southern Leyte. In Partial Fulfilment of the Requirements fo the Degree Doctor of Ecducation in Educational Management,Luận án tiến sĩ. Chuyên ngành: Quản lý Giáo dục. Philippines: Southern Leyte State University.

Cao, Thi Hong Cam, و Cao Thi Hong Cam; Lilibeth S. Tindugan. Beliefs and Practices of Primary Teachers On Language Learning Strategies in Teaching English As a Foreign Language: A Dissertation Presented to the Faculty of the Graduate School Southern Leyte State University - College of Teacher Education San Isidro, Tomas Oppus, Southern Leyte. In Partial Fulfilment of the Requirements Fo the Degree Doctor of Ecducation in Educational Management,Luận án Tiến Sĩ. Chuyên Ngành: Quản Lý Giáo Dục. Philippines: Southern Leyte State University, 2019.

Cao, Thi Hong Cam, و Cao Thi Hong Cam; Lilibeth S. Tindugan. Beliefs and Practices of Primary Teachers On Language Learning Strategies in Teaching English As a Foreign Language: A Dissertation Presented to the Faculty of the Graduate School Southern Leyte State University - College of Teacher Education San Isidro, Tomas Oppus, Southern Leyte. In Partial Fulfilment of the Requirements Fo the Degree Doctor of Ecducation in Educational Management,Luận án Tiến Sĩ. Chuyên Ngành: Quản Lý Giáo Dục. Philippines: Southern Leyte State University, 2019.