11.11.11. 490_2/2168: Projectnummer: 2168; Land/Regio: Vietnam; Code: VIETNAM/89; Projectnaam: Manual drilled wells in rural Vietnam.
芝加哥风格引文11.11.11. 490_2/2168: Projectnummer: 2168; Land/Regio: Vietnam; Code: VIETNAM/89; Projectnaam: Manual Drilled Wells in Rural Vietnam.
MLA引文11.11.11. 490_2/2168: Projectnummer: 2168; Land/Regio: Vietnam; Code: VIETNAM/89; Projectnaam: Manual Drilled Wells in Rural Vietnam.
警告：这些引文格式不一定是100％准确.