Air transport services :
low-cost fares : agreement between the United States of America and Mexico, modifying the agreement of August 15, 1960, as amended and extended, effected by exchange of notes signed at Mexico and Tlatelolco November 7 and December 21, 1977.

APA Citation

United States., Mexico., United States. Department of State. (1978). Air transport services: low-cost fares : agreement between the United States of America and Mexico, modifying the agreement of August 15, 1960, as amended and extended, effected by exchange of notes signed at Mexico and Tlatelolco November 7 and December 21, 1977. [Washington]: Dept. of State : for sale by the Supt. of Docs., U.S. Govt. Print. Off..

MLA Citation

United States, Mexico, and United States. Department of State. Air Transport Services: Low-cost Fares : Agreement Between the United States of America And Mexico, Modifying the Agreement of August 15, 1960, As Amended And Extended, Effected by Exchange of Notes Signed At Mexico And Tlatelolco November 7 And December 21, 1977. [Washington]: Dept. of State : for sale by the Supt. of Docs., U.S. Govt. Print. Off., 1978.

Warning: These citations may not always be complete (especially for serials).