APA (7th ed.) Citation

Shreve, C. (1997). UFOs, NGOs, or IGOs: Using International Documents for General Reference.

Chicago Style (17th ed.) Citation

Shreve, Catherine. UFOs, NGOs, or IGOs: Using International Documents for General Reference. 1997.

MLA (9th ed.) Citation

Shreve, Catherine. UFOs, NGOs, or IGOs: Using International Documents for General Reference. 1997.

Warning: These citations may not always be 100% accurate.