APA (7th ed.) Citation

Clancy's, T. (1999). Tom Clancy's op-centre state of siege. Harper Collins Publishers.

Chicago Style (17th ed.) Citation

Clancy's, Tom. Tom Clancy's Op-centre State of Siege. London: Harper Collins Publishers, 1999.

MLA (9th ed.) Citation

Clancy's, Tom. Tom Clancy's Op-centre State of Siege. Harper Collins Publishers, 1999.

Warning: These citations may not always be 100% accurate.