Gaya APA

Hagen, Stacy A., Azar, Betty S. (2009). Understanding and Using English Grammar, 4th Ed. With Answer Key, CD1-2 Chapters 1-20 (4th. Edition). America: Pearson Logman.

Gaya Chicago

Hagen, Stacy A., Azar, Betty S. Understanding and Using English Grammar, 4th Ed. With Answer Key, CD1-2 Chapters 1-20. 4th. Edition America: Pearson Logman, 2009. Koleksi Multimedia / CD-ROM.

Gaya MLA

Hagen, Stacy A., Azar, Betty S. Understanding and Using English Grammar, 4th Ed. With Answer Key, CD1-2 Chapters 1-20. 4th. Edition America: Pearson Logman, 2009. Koleksi Multimedia / CD-ROM.

Gaya Turabian

Hagen, Stacy A., Azar, Betty S. Understanding and Using English Grammar, 4th Ed. With Answer Key, CD1-2 Chapters 1-20. 4th. Edition America: Pearson Logman, 2009. Koleksi Multimedia / CD-ROM.