APA (7th ed.) Citation

Wallert, W. (2009). Hostage terror: Abducted by the Abu Sayaff. Marshall Cavendish Editions Marshall Cavendish Corp.

Chicago Style (17th ed.) Citation

Wallert, Werner. Hostage Terror: Abducted by the Abu Sayaff. Singapore, Tarrytown, N.Y: Marshall Cavendish Editions Marshall Cavendish Corp, 2009.

MLA (9th ed.) Citation

Wallert, Werner. Hostage Terror: Abducted by the Abu Sayaff. Marshall Cavendish Editions Marshall Cavendish Corp, 2009.