APA (7th ed.) Citation

Institute), R. F. E. L. R. I. (. R. Observations Made When Crossing the Frontier between Bulgaria and Yugoslavia.

Chicago Style (17th ed.) Citation

Institute), Radio Free Europe/Radio Liberty Research Institute (RFE/RL Research. Observations Made When Crossing the Frontier Between Bulgaria and Yugoslavia.

MLA (8th ed.) Citation

Institute), Radio Free Europe/Radio Liberty Research Institute (RFE/RL Research. Observations Made When Crossing the Frontier Between Bulgaria and Yugoslavia.

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