NSA chief: Spying thwarted 50 attacks. IN World News. The Philippine Star.
Citación estilo Chicago"NSA Chief: Spying Thwarted 50 Attacks. IN World News." The Philippine Star .
Cita MLA"NSA Chief: Spying Thwarted 50 Attacks. IN World News." The Philippine Star, .
Warning: These citations may not always be 100% accurate.