Spence, W. P., & Michael B. Atkins. (1980). Technical drafting: Metric design and communication. National Book Store.
芝加哥风格引文Spence, William Perkins, 与 Michael B. Atkins. Technical Drafting: Metric Design and Communication. Manila: National Book Store, 1980.
MLA引文Spence, William Perkins, 与 Michael B. Atkins. Technical Drafting: Metric Design and Communication. National Book Store, 1980.
警告：这些引文格式不一定是100％准确.