APA-viite (7. p.)

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

Chicago-viite (17. p.)

Biggs, Edith Ethel, ja James R. MacLean. Freedom to Learn: An Active Learning Approach to Mathematics. Don Mills (Ont.) ; Reading (Mass.) ; Menlo Park (Calif.) [etc.]: Addison-Wesley (Canada), 1969.

MLA-viite (8. p.)

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