Cita APA (7th ed.)

Radford, L., Schubring, G., & Seeger, F. (2008). Semiotics in mathematics education: Epistemology, history, classroom, and culture. Sense Publishers.

Cita Chicago (17th ed.)

Radford, Luis, Gert Schubring, i Falk Seeger. Semiotics in Mathematics Education: Epistemology, History, Classroom, and Culture. Rotterdam: Sense Publishers, 2008.

Cita MLA (9th ed.)

Radford, Luis, et al. Semiotics in Mathematics Education: Epistemology, History, Classroom, and Culture. Sense Publishers, 2008.