APA (7th ed.) Citation

Romero Vásquez, G. E. Learning english as a second foreign language.

Chicago Style (17th ed.) Citation

Romero Vásquez, Gladis Eulalia. Learning English as a Second Foreign Language.

MLA (8th ed.) Citation

Romero Vásquez, Gladis Eulalia. Learning English as a Second Foreign Language.

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