APA (7th ed.) Citation

Hernandez Ayala, I. (1998). English for secondary school (Primera ediciòn 1998.). Voluntad S.A.

Chicago Style (17th ed.) Citation

Hernandez Ayala, Isabel. English for Secondary School. Primera ediciòn 1998. Bogotà: Voluntad S.A, 1998.

MLA (9th ed.) Citation

Hernandez Ayala, Isabel. English for Secondary School. Primera ediciòn 1998. Voluntad S.A, 1998.

Warning: These citations may not always be 100% accurate.