Has there been a national referendum since 1980? - Lao People's Dem. Republic

Country: 
Lao People's Dem. Republic
Question: 
Has there been a national referendum since 1980?
Answer: 
No
Source: 

Direct Democracy in Asia: A Reference Guide to the Legislation and Practice:

"There is no legislation of direct democracy in Laos" (page 155) and "there is no practice of direct democracy" (page 156)