Gaya APA
HUGHES, P., FERRETT, E.
(2016).
International health and safety at work:
(
3rd ed.)
.
London:
Routledge.
Gaya MLA
HUGHES, Phil., FERRETT, Ed.
"International health and safety at work:".
3rd ed.
London:
Routledge,
2016.
Buku.