Gaya APA
Basri, A, H, H., Pakpahan, T, E. (2018).
E-book Buku Ajar Persiapan Lahan Perkebunan .
Jakarta:
Kementerian Pertanian.
Gaya MLA
Basri, Arie, Hapsani, Hasan., Pakpahan, Tience, Elizabet.
"E-book Buku Ajar Persiapan Lahan Perkebunan".
Jakarta:
Kementerian Pertanian,
2018.
Electronic Resource.