Biggs, E., & MacLean, J. R. (1969). Freedom to learn;: An active learning approach to mathematics. Addison-Wesley (Canada) Ltd..
Chicago Style (17. basım) AtıfBiggs, Edith, ve James R. MacLean. Freedom to Learn;: An Active Learning Approach to Mathematics. Don Mills, Ont., Reading, Mass.,: Addison-Wesley (Canada) Ltd., 1969.
MLA (8th ed.) AtıfBiggs, Edith, ve James R. MacLean. Freedom to Learn;: An Active Learning Approach to Mathematics. Addison-Wesley (Canada) Ltd., 1969.
Uyarı: Bu alıntı herzaman %100 doğru olmayabilir..