APA-Zitierstil (7. Ausg.)

(1985). Learning to add and subtract: Learning activities and implications from recent cognitive research / Gerald Kulm.

Chicago-Zitierstil (17. Ausg.)

Learning to Add and Subtract: Learning Activities and Implications from Recent Cognitive Research / Gerald Kulm. 1985.

MLA-Zitierstil (9. Ausg.)

Learning to Add and Subtract: Learning Activities and Implications from Recent Cognitive Research / Gerald Kulm. 1985.