APA (7e ed.) Bronvermelding

Pulford, G. W. (2007). High-security mechanical locks: An encyclopedic reference. Elsevier/Butterworth-Heinemann.

Chicago (17e ed.) Bronvermelding

Pulford, Graham W. High-security Mechanical Locks: An Encyclopedic Reference. Burlington: Elsevier/Butterworth-Heinemann, 2007.

MLA (8e ed.) Bronvermelding

Pulford, Graham W. High-security Mechanical Locks: An Encyclopedic Reference. Elsevier/Butterworth-Heinemann, 2007.

Let op: Deze citaties zijn niet altijd 100% accuraat.