Cita APA (7th ed.)

RIVAS HERRERA, C. A., & RAMÓN VILLA, S. F. (2012). STUDENT’S WORKBOOK FOR 9th YEAR OF BASIC EDUCATION THAT SUPPORTS THE STUDY OF THE ENGLISH LANGUAGE ALONGSIDE THE TEXT BOOK “OUR WORLD THROUGH ENGLISH” N° 2.

Cita Chicago (17th ed.)

RIVAS HERRERA, CARLOS ALBERTO, i SERGIO FERNANDO RAMÓN VILLA. STUDENT’S WORKBOOK FOR 9th YEAR OF BASIC EDUCATION THAT SUPPORTS THE STUDY OF THE ENGLISH LANGUAGE ALONGSIDE THE TEXT BOOK “OUR WORLD THROUGH ENGLISH” N° 2. 2012.

Cita MLA (9th ed.)

RIVAS HERRERA, CARLOS ALBERTO, i SERGIO FERNANDO RAMÓN VILLA. STUDENT’S WORKBOOK FOR 9th YEAR OF BASIC EDUCATION THAT SUPPORTS THE STUDY OF THE ENGLISH LANGUAGE ALONGSIDE THE TEXT BOOK “OUR WORLD THROUGH ENGLISH” N° 2. 2012.