APA (7th ed.) Citation

Ma, W., Zhong, Y., Tso, S., & Zhou, T. (2004). A hierarchically structured and constraint-based data model for intuitive and precise solid modeling in a virtual reality environment. Elsevier.

Chicago Style (17th ed.) Citation

Ma, W., Yongmin Zhong, S. Tso, and T. Zhou. A Hierarchically Structured and Constraint-based Data Model for Intuitive and Precise Solid Modeling in a Virtual Reality Environment. Elsevier, 2004.

MLA (9th ed.) Citation

Ma, W., et al. A Hierarchically Structured and Constraint-based Data Model for Intuitive and Precise Solid Modeling in a Virtual Reality Environment. Elsevier, 2004.