Cita APA (7th ed.)

Siertsema, B. A test in phonetics: 500 questions andanswers on english pronunciation and how to teach it in west africa. Martinus Nijhoff.

Cita Chicago (17th ed.)

Siertsema, B. A Test in Phonetics: 500 Questions Andanswers on English Pronunciation and How to Teach It in West Africa. The Hague: Martinus Nijhoff.

Cita MLA (9th ed.)

Siertsema, B. A Test in Phonetics: 500 Questions Andanswers on English Pronunciation and How to Teach It in West Africa. Martinus Nijhoff.