Jardin, J. C. (1978). Systematic methods of watch repairing. [s.n.].
芝加哥风格引文Jardin, Jorge Canon. Systematic Methods of Watch Repairing. Manila: [s.n.], 1978.
MLA引文Jardin, Jorge Canon. Systematic Methods of Watch Repairing. [s.n.], 1978.
警告：这些引文格式不一定是100％准确.