APA

United States, Greece & United States. (2016). Defense: agreements between the United States of America and Greece extending Agreement of July 8, 1990, effected by exchange of notes at Athens, May 19 and June 25, 2014 ; effected by exchange of notes at Athens, June 12 and September 9, 2015. [Washington, D.C.]: United States Department of State.

Chicago

United States, Greece and United States. 2016. Defense: agreements between the United States of America and Greece extending Agreement of July 8, 1990, effected by exchange of notes at Athens, May 19 and June 25, 2014 ; effected by exchange of notes at Athens, June 12 and September 9, 2015. [Washington, D.C.]: United States Department of State.

Harvard

United States, Greece and United States. (2016). Defense: agreements between the United States of America and Greece extending Agreement of July 8, 1990, effected by exchange of notes at Athens, May 19 and June 25, 2014 ; effected by exchange of notes at Athens, June 12 and September 9, 2015. [Washington, D.C.]: United States Department of State.

MLA

United States, Greece and United States. Defense: agreements between the United States of America and Greece extending Agreement of July 8, 1990, effected by exchange of notes at Athens, May 19 and June 25, 2014 ; effected by exchange of notes at Athens, June 12 and September 9, 2015. [Washington, D.C.]: United States Department of State. 2016.