Tohutoro APA (7th ed.)
Pulford, G. W. (2007). High-security mechanical locks: An encyclopedic reference. Elsevier Butterworth-Heinemann.
Tohutoru Kātū Chicago (17th ed.)
Pulford, Graham W. High-security Mechanical Locks: An Encyclopedic Reference. Amsterdam ; Boston: Elsevier Butterworth-Heinemann, 2007.
Tohutoro MLA (9th ed.)
Pulford, Graham W. High-security Mechanical Locks: An Encyclopedic Reference. Elsevier Butterworth-Heinemann, 2007.
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