Gaya APA
dkk, H, W, W. (1988).
Assessment of Crops Loss From Air Pollutants (Cetakan Pertama).
new york:
Elsevier Sciene Pubisher.
Gaya MLA
dkk, Heck, Walter, W.,.
"Assessment of Crops Loss From Air Pollutants".
Cetakan Pertama
new york:
Elsevier Sciene Pubisher,
1988.
Text.