Gaya APA
Priono, N, J.
(2021).
70 materi safety talks
.
yogyakarta:
Deepublish.
Gaya MLA
Priono, Noviaji, Joko.
"70 materi safety talks".
yogyakarta:
Deepublish,
2021.
Keselamatan Kesehatan Kerja.