APA (7th ed.) Citation

Aerospace Center (U.S.). (1900). Operational navigation chart: [Africa] (Ed. 6.). The Center.

Chicago Style (17th ed.) Citation

Aerospace Center (U.S.). Operational Navigation Chart: [Africa]. Ed. 6. St. Louis, Mo.: The Center, 1900.

MLA (9th ed.) Citation

Aerospace Center (U.S.). Operational Navigation Chart: [Africa]. Ed. 6. The Center, 1900.