Gaya APA

America, U, N, O., Townshend, . (1994). Proceeding Mapping and Remote Sensing tools for the 21st Century, Conference and exposition, with feature emphasis on public private interaction . Bethesda: ASPRS.

Gaya MLA

America, United, Nations, Of., Townshend, . "Proceeding Mapping and Remote Sensing tools for the 21st Century, Conference and exposition, with feature emphasis on public private interaction". Bethesda: ASPRS, 1994. Text.