The form langa (< English along) alternates with nanga. Nanga is found exclusively in the late 18th century sources. In one mid-18th century source both forms co-occur. In the remaining early and mid-18th century sources langa is encountered (Van den Berg 2007: 135).
Source: Schumann 1783: 47
Source: van Dyk ca. 1765: 81
Source: Weygandt 1798: 75
Source: Schumann 1781: 57