APA-referens (7:e uppl.)

Crowl, T. K. (1996). Fundamentals of educational research (2nd ed.). Brown & Benchmark.

Chicago-referens (17:e uppl.)

Crowl, Thomas K. Fundamentals of Educational Research. 2nd ed. Madison, WI: Brown & Benchmark, 1996.

MLA-referens (9:e uppl.)

Crowl, Thomas K. Fundamentals of Educational Research. 2nd ed. Brown & Benchmark, 1996.