APA Style
Helle, W., Rosen, D.. (1990).
World Crop Pests : Armored Scale Insects; Their Biology, Natural Enemies and Control, Volume 4B .
The Netherlands:
Elsevier.
Chicago Style
Helle, W., Rosen, D..
World Crop Pests : Armored Scale Insects; Their Biology, Natural Enemies and Control, Volume 4B.
The Netherlands:
Elsevier,
1990.
Text.
MLA Style
Helle, W., Rosen, D..
World Crop Pests : Armored Scale Insects; Their Biology, Natural Enemies and Control, Volume 4B.
The Netherlands:
Elsevier,
1990.
Text.
Turabian Style
Helle, W., Rosen, D..
World Crop Pests : Armored Scale Insects; Their Biology, Natural Enemies and Control, Volume 4B.
The Netherlands:
Elsevier,
1990.
Print.