Cita APA (7a ed.)

Ziegeler, D., & Zhiming, B. (2017). Negation and contact: With special focus on Singapore English. John Benjamins Publishing Company.

Cita Chicago Style (17a ed.)

Ziegeler, Debra, y Bao Zhiming. Negation and Contact: With Special Focus on Singapore English. Amsterdam ; Philadelphia: John Benjamins Publishing Company, 2017.

Cita MLA (8a ed.)

Ziegeler, Debra, y Bao Zhiming. Negation and Contact: With Special Focus on Singapore English. John Benjamins Publishing Company, 2017.