APA (7th ed.) Citation

Castelo, L. M. Essentials for speaking and writing English: Lutgarda M. Castelo, Jovita N. Fernando. Far Eastern University.

Chicago Style (17th ed.) Citation

Castelo, Lutgarda Mendoza. Essentials for Speaking and Writing English: Lutgarda M. Castelo, Jovita N. Fernando. Manila: Far Eastern University.

MLA (9th ed.) Citation

Castelo, Lutgarda Mendoza. Essentials for Speaking and Writing English: Lutgarda M. Castelo, Jovita N. Fernando. Far Eastern University.

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