APA Style
Purwanto, W.
(2003).
Proceeding Seminar Nasional Ergonomi
.
Yogyakarta:
Dep. Mikrobiologi F.Pertanian UGM.
MLA Style
Purwanto, Wahyu.
"Proceeding Seminar Nasional Ergonomi".
Yogyakarta:
Dep. Mikrobiologi F.Pertanian UGM,
2003.
Text.