Gaya APA
Enviromental Health Criteria 20 Selected Petroleum Products. (1982).
Malang Kota:
WHO Geneva.
Gaya Chicago
Enviromental Health Criteria 20 Selected Petroleum Products.
.
Malang Kota:
WHO Geneva,
1982.
Text.
Gaya MLA
Enviromental Health Criteria 20 Selected Petroleum Products.
.
Malang Kota:
WHO Geneva,
1982.
Text.
Gaya Turabian
Enviromental Health Criteria 20 Selected Petroleum Products.
Malang Kota:
WHO Geneva,
1982.
Print.