Woraluk Narongpun. 2009. A survey middle-level administrators' leadership styles driving government officials' engagement at the Office of the Permanent Secretary of the Interior (OPSI). Bangkok:Thammasat University; DOI : https://doi.nrct.go.th/ListDoi/listDetail?Resolve_DOI=10.14457/TU.the.2009.178
Woraluk Narongpun. (2009) A survey middle-level administrators' leadership styles driving government officials' engagement at the Office of the Permanent Secretary of the Interior (OPSI) (รายงานผลงานวิจัย). Thammasat University:Bangkok. DOI : https://doi.nrct.go.th/ListDoi/listDetail?Resolve_DOI=10.14457/TU.the.2009.178
Woraluk Narongpun. A survey middle-level administrators' leadership styles driving government officials' engagement at the Office of the Permanent Secretary of the Interior (OPSI). Bangkok:Thammasat University, 2009. DOI : https://doi.nrct.go.th/ListDoi/listDetail?Resolve_DOI=10.14457/TU.the.2009.178
Woraluk Narongpun. (2009) A survey middle-level administrators' leadership styles driving government officials' engagement at the Office of the Permanent Secretary of the Interior (OPSI) (รายงานผลงานวิจัย). Thammasat University:Bangkok. DOI : https://doi.nrct.go.th/ListDoi/listDetail?Resolve_DOI=10.14457/TU.the.2009.178