APA (7th ed.) Citation

Ludlum, R. (1979). The Holcroft covenant. Book Club Associates.

Chicago Style (17th ed.) Citation

Ludlum, Robert. The Holcroft Covenant. London: Book Club Associates, 1979.

MLA (8th ed.) Citation

Ludlum, Robert. The Holcroft Covenant. Book Club Associates, 1979.

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