Gaya APA

Ass., N, F, P. (1980). National fire codes 1980 volume 15. (1980). : Boston : National Fire Protectection Associ.,.

Gaya MLA

Ass., National, Fire, Protection. "National fire codes 1980 volume 15.". 1980 : Boston : National Fire Protectection Associ.,, 1980. Text.