Cita APA (7th ed.)

Xinhua News Agency. (2017). US researchers invent first battery-free cellphone. Manila Bulletin.

Cita Chicago (17th ed.)

Xinhua News Agency. "US Researchers Invent First Battery-free Cellphone." Manila Bulletin 2017.

Cita MLA (9th ed.)

Xinhua News Agency. "US Researchers Invent First Battery-free Cellphone." Manila Bulletin, 2017.

Atenció: Aquestes cites poden no estar 100% correctes.