Gaya APA
Kardian, Agus. (2016).
Sistem pertanian organik (ed.1).
Medan:
Intimedia & Ladang Pustaka.
Gaya Chicago
Kardian, Agus.
Sistem pertanian organik.
ed.1
Medan:
Intimedia & Ladang Pustaka,
2016.
PERTANIAN.
Gaya MLA
Kardian, Agus.
Sistem pertanian organik.
ed.1
Medan:
Intimedia & Ladang Pustaka,
2016.
PERTANIAN.
Gaya Turabian
Kardian, Agus.
Sistem pertanian organik.
ed.1
Medan:
Intimedia & Ladang Pustaka,
2016.
PERTANIAN.