How to cite a Wikileaks cable
First footnote
1. Embassy Madrid, “GOS Relations with PRC: Background and Reaction,” Wikileaks Cable: 1973MADRID01251_b, dated March 12, 1973, https://wikileaks.org/plusd/cables/1973MADRID01251_b.html.
Subsequent shortened footnotes
2. Embassy Madrid, "GOS Relations with PRC."
Bibliography
Embassy Madrid. “GOS Relations with PRC: Background and Reaction.” Wikileaks Cable: 1973MADRID01251_b. Dated March 12, 1973. https://wikileaks.org/plusd/cables/1973MADRID01251_b.html.