APA

Nay R. L., Law Library of Congress (U.S.), . (1990). Countries with smoking bans on domestic and international flights. [Washington, D.C.]: American-British Law Division, Law Library of Congress.

Chicago

Nay Robert L, Law Library of Congress (U.S.), . 1990. Countries with smoking bans on domestic and international flights. [Washington, D.C.]: American-British Law Division, Law Library of Congress.

Harvard

Nay R. L., Law Library of Congress (U.S.), . (1990). Countries with smoking bans on domestic and international flights. [Washington, D.C.]: American-British Law Division, Law Library of Congress.

MLA

Nay Robert L, Law Library of Congress (U.S.), . Countries with smoking bans on domestic and international flights. [Washington, D.C.]: American-British Law Division, Law Library of Congress. 1990.