Gaya APA
Langeveld, H. et al (2014).
Biofuel cropping systems: carbon, land, and food (First edition.).
enk:
Taylor & Francis Group.
Gaya MLA
Langeveld, Hans.. et al.
"Biofuel cropping systems: carbon, land, and food".
First edition.
enk:
Taylor & Francis Group,
2014.
E Book.