APA-Zitierstil (7. Ausg.)

Biggs, E. E., & MacLean, J. R. (1969). Freedom to learn: An active learning approach to mathematics. Addison-Wesley Canada.

Chicago-Zitierstil (17. Ausg.)

Biggs, Edith Ethel, und James R. MacLean. Freedom to Learn: An Active Learning Approach to Mathematics. Don Mills, Ont., Reading, MA: Addison-Wesley Canada, 1969.

MLA-Zitierstil (9. Ausg.)

Biggs, Edith Ethel, und James R. MacLean. Freedom to Learn: An Active Learning Approach to Mathematics. Addison-Wesley Canada, 1969.