Sofyan ET, Machfud Y, Mulyani O, Gusyana D, Rajagukguk RP, Afif Sugi AS. Uji Efektivitas Pupuk An-Organik Ammonium Klorida "BUMI IJO" Terhadap Tanaman Jagung (Zea mays L.). Agropross [Internet]. 25 November 2017 [dikutip 12 April 2025];1:17-29. Tersedia pada: https://proceedings.polije.ac.id/index.php/agropross/article/view/4