Tohutoro APA (7th ed.)

Conrad, S., & Biber, D. (2001). Variation in english: Multi-dimensional studies. Pearson Education.

Tohutoru Kātū Chicago (17th ed.)

Conrad, Susan, me Douglas Biber. Variation in English: Multi-dimensional Studies. Essex: Pearson Education, 2001.

Tohutoro MLA (9th ed.)

Conrad, Susan, me Douglas Biber. Variation in English: Multi-dimensional Studies. Pearson Education, 2001.