APA-ийн эшлэл(7 дахь хэвлэлт)

Welfare, H. (2022). General William Roy, 1726-1790: Father of the Ordnance Survey. Edinburgh University Press.

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

Welfare, Humphrey. General William Roy, 1726-1790: Father of the Ordnance Survey. Edinburgh: Edinburgh University Press, 2022.

MLA -ийн эшлэл (9 дэх хэвлэлт)

Welfare, Humphrey. General William Roy, 1726-1790: Father of the Ordnance Survey. Edinburgh University Press, 2022.