Cita APA (7th ed.)

Sanger, D. E., & Perlroth, N. Internet giants erect barriers to thwart spy agencies. IN The New York Times. Manila Bulletin.

Cita Chicago (17th ed.)

Sanger, David E., i Nicole Perlroth. "Internet Giants Erect Barriers to Thwart Spy Agencies. IN The New York Times." Manila Bulletin .

Cita MLA (9th ed.)

Sanger, David E., i Nicole Perlroth. "Internet Giants Erect Barriers to Thwart Spy Agencies. IN The New York Times." Manila Bulletin, .