Cita APA (7a ed.)
White, C. (1980). The classification of function words.
Cita estilo Chicago (17a ed.)
White, Colins. The Classification of Function Words. 1980.
Cita MLA (9a ed.)
White, Colins. The Classification of Function Words. 1980.
Precaución: Estas citas no son 100% exactas.