Irnad, I.
(2017).
 Tingkah Laku Produksi Petani-Petani Gambir.
<em>Jurnal Embrio, 2</em>(01), 8-18.
Retrieved from <a href="https://ojs.unitas-pdg.ac.id/index.php/embrio/article/view/103" target="_new">https://ojs.unitas-pdg.ac.id/index.php/embrio/article/view/103</a>