APA

United States, Bulgaria & United States. (2019). Cultural exchanges, property and cooperation: import restrictions : memorandum of understanding between the United States of America and Bulgaria, signed at Sofia, January 8, 2019. [Washington, D.C.]: United States Department of State.

Chicago

United States, Bulgaria and United States. 2019. Cultural exchanges, property and cooperation: import restrictions : memorandum of understanding between the United States of America and Bulgaria, signed at Sofia, January 8, 2019. [Washington, D.C.]: United States Department of State.

Harvard

United States, Bulgaria and United States. (2019). Cultural exchanges, property and cooperation: import restrictions : memorandum of understanding between the United States of America and Bulgaria, signed at Sofia, January 8, 2019. [Washington, D.C.]: United States Department of State.

MLA

United States, Bulgaria and United States. Cultural exchanges, property and cooperation: import restrictions : memorandum of understanding between the United States of America and Bulgaria, signed at Sofia, January 8, 2019. [Washington, D.C.]: United States Department of State. 2019.