(1969). World ..: Series 1404 (Ed. 1-GSGS. Pr. ... by Ordnance Survey ... [19]69.). Directorate of Military Survey.
Chicago Style (17th ed.) CitationWorld ..: Series 1404. Ed. 1-GSGS. Pr. ... by Ordnance Survey ... [19]69. [London]: Directorate of Military Survey, 1969.
MLA (9th ed.) CitationWorld ..: Series 1404. Ed. 1-GSGS. Pr. ... by Ordnance Survey ... [19]69. Directorate of Military Survey, 1969.
Warning: These citations may not always be 100% accurate.