Cita APA (7a ed.)

Wu, R., Cheng, X., & Yang, C. (2009). Extracting contour lines from topographic maps based on cartography and graphics knowledge.

Cita Chicago Style (17a ed.)

Wu, Rui-Qing, Xi-Ran Cheng, y Cun-Jian Yang. Extracting Contour Lines from Topographic Maps Based on Cartography and Graphics Knowledge. 2009.

Cita MLA (8a ed.)

Wu, Rui-Qing, et al. Extracting Contour Lines from Topographic Maps Based on Cartography and Graphics Knowledge. 2009.