Plant level measurements methods and results/ prepared by Jean Carrie
Organisation for Economic Co-operation and Development, 1955
 Buku Teks
Weaver, John E., author
Plant ecology
McGraw-Hill, 1938
 Buku Teks
Djumali Mangunwidjaja
Teknologi bioproses/Djumali Mangunwidjaja, Ani Suryani
Penebar Swadaya, 1994
 Buku Teks
Mempelajari sifat kekerasan substrat Cu yang dilapisi Cr
Universitas Indonesia, 1993
 UI - Skripsi (Membership)
Siahaan, Gerald P., author; Nainggolan, Hotden L., author; Aritonang, Johndikson, author; Hutapea, Mangihut, author
Sistem integrasi tanaman semusim; sawi, kon dan tomat dengan ternak babi di kecamatan paranginan kabupaten humbang hasundutan / Gerald P. Siahaan, Hotden L. Nainggolan, Johndikson Aritonang, Mangihut Hutapea
Universitas HKBP Nonmensen, 2017
 Artikel Jurnal