Cita APA (7th ed.)

Avila, D. M. (2000). Essentials of English: Worktext. Mutya Pub. House.

Cita Chicago (17th ed.)

Avila, Dorcas M. Essentials of English: Worktext. Valenzuela City: Mutya Pub. House, 2000.

Cita MLA (9th ed.)

Avila, Dorcas M. Essentials of English: Worktext. Mutya Pub. House, 2000.