APA Style
Issaka, Roland. (2012).
SOIL FERTILITY .
Janeza:
Intech.
Chicago Style
Issaka, Roland.
SOIL FERTILITY.
Janeza:
Intech,
2012.
Text.
MLA Style
Issaka, Roland.
SOIL FERTILITY.
Janeza:
Intech,
2012.
Text.
Turabian Style
Issaka, Roland.
SOIL FERTILITY.
Janeza:
Intech,
2012.
Print.