Citation Hunt

The Wikipedia snippet below is not backed by a reliable source. Can you find one?

Click I got this! to go to Wikipedia and fix the snippet, or Next! to see another one. Good luck!

In page People's Army of Vietnam:

"

The Southern expansion of Vietnam resulted in the destruction of Champa as an independent nation to a level that it did not exist anymore; total destruction of Luang Prabang;[citation needed] the decline of Cambodia which resulted in Vietnam's annexation of the Mekong Delta and wars against Siam. In most of its history, the Royal Vietnamese Armed Forces was often regarded to be one of the most professional, battle-hardened and heavily trained armies in Southeast Asia as well as Asia in a large extent.[citation needed]