Cita APA (7th ed.)

Siniscalchi, V., & Antunes, M. A. (2020). Sing up to English! New edition: Student's book. Richmond.

Cita Chicago (17th ed.)

Siniscalchi, Valéria, i Ma Alice Antunes. Sing Up to English! New Edition: Student's Book. Buenos Aires: Richmond, 2020.

Cita MLA (9th ed.)

Siniscalchi, Valéria, i Ma Alice Antunes. Sing Up to English! New Edition: Student's Book. Richmond, 2020.