Schwieger, R. D., & Ruben D. Schwieger. (1999). Teaching elementary school mathematics: A problem-solving approach. Belmont, CA: Wadsworth Pub.
Stile di citazione ChicagoSchwieger, Ruben D., e Ruben D. Schwieger. Teaching Elementary School Mathematics: A Problem-solving Approach. Belmont, CA: Wadsworth Pub, 1999.
Citazione MLASchwieger, Ruben D., e Ruben D. Schwieger. Teaching Elementary School Mathematics: A Problem-solving Approach. Belmont, CA: Wadsworth Pub, 1999.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.