Cita APA (7a ed.)

Hoop, H. d., & Amberber, M. (2005). Competition and variation in natural languages: The case for case. Elsevier.

Cita Chicago Style (17a ed.)

Hoop, Helen de, y Mengistu Amberber. Competition and Variation in Natural Languages: The Case for Case. Amsterdam ; San Diego, CA ; Oxford: Elsevier, 2005.

Cita MLA (9a ed.)

Hoop, Helen de, y Mengistu Amberber. Competition and Variation in Natural Languages: The Case for Case. Elsevier, 2005.