Cita APA

Biggs, E., & Sutton, J. Teaching mathematics 5 to 9: A classroom guide.

Chicago Edition Citation

Biggs, Edith, i Joan Sutton. Teaching Mathematics 5 to 9: A Classroom Guide. London, Mcgraw Hill Book Company.

Cita MLA

Biggs, Edith, i Joan Sutton. Teaching Mathematics 5 to 9: A Classroom Guide.