Good academic writing requires evidence of reference to scholarly literature in the relevant discipline you are studying.
Example of a Bibliography/Reference List
Source: Keating, X.D. and Silverman, S. (2004) Physical Education Teacher Attitudes Toward Fitness Test Scale:
Development and Validation. Journal of Teaching in Physical Education, 23 (2), 143 - 162.
Source: Pennock, Pamela (1997) The National Recovery Administration and the Rubber Tire Industry 1933 - 1935. Business History Review, 71 (4), 543-568.