Cita APA (7th ed.)

ProQuest (Firm), Perniss, P., Pfau, R., & Steinbach, M. (2007). Visible variation: Comparative studies on sign language structure. Mouton de Gruyter.

Cita Chicago (17th ed.)

ProQuest (Firm), Pamela Perniss, Roland Pfau, i Markus Steinbach. Visible Variation: Comparative Studies on Sign Language Structure. Berlin ; New York: Mouton de Gruyter, 2007.

Cita MLA (9th ed.)

ProQuest (Firm), et al. Visible Variation: Comparative Studies on Sign Language Structure. Mouton de Gruyter, 2007.