APA
Ludlum R., . (20051979). Osterman weekend. London: Granada Publishing # Orion Book.
Chicago
Ludlum Robert, . 20051979. Osterman weekend. London: Granada Publishing # Orion Book.
Harvard
Ludlum R., . (20051979). Osterman weekend. London: Granada Publishing # Orion Book.
MLA
Ludlum Robert, . Osterman weekend. London: Granada Publishing # Orion Book. 20051979.