APA
(2018). Specification for plastic materials for food contact applications part 4: polypropylene (pp). Colombo: Sri Lanka Standard Institutional.
Chicago
2018. Specification for plastic materials for food contact applications part 4: polypropylene (pp). Colombo: Sri Lanka Standard Institutional.
Harvard
(2018). Specification for plastic materials for food contact applications part 4: polypropylene (pp). Colombo: Sri Lanka Standard Institutional.
MLA
Specification for plastic materials for food contact applications part 4: polypropylene (pp). Colombo: Sri Lanka Standard Institutional. 2018.
