Phu, Pham, 		Nhi, Pham, 		Tru, Hoang, AND 		Nga, Cao.
" Species composition of the subfamily Cetoniinae (Coleoptera: Scarabaeidae) from Phia Oac-Phia Den National Park, Cao Bang Province" <em>VNU Journal of Science: Natural Sciences and Technology</em> [Online], Volume 38 Number 2 (10 June 2022)