Murphy, R., & Raymond Murphy. (2009). Essential Grammar in Use: Self-study reference and practice book for elementary students of English. Hà Nội: Lao động.
Citação norma ChicagoMurphy, Raymond, e Raymond Murphy. Essential Grammar in Use: Self-study Reference and Practice Book for Elementary Students of English. Hà Nội: Lao động, 2009.
Citação norma MLAMurphy, Raymond, e Raymond Murphy. Essential Grammar in Use: Self-study Reference and Practice Book for Elementary Students of English. Hà Nội: Lao động, 2009.
Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.