Sejarah Surat Kabar

https://orbitdigitaldaily.com/hpn-2019-di-medan-puluhan-koran-berusia-lebih-100-tahun-dipamerkan-di-kantor-gubsu/

https://www.google.com/search?q=Boroe+Tapanoeli&safe=strict&rlz=1C1CHBD_enID786ID786&tbm=isch&source=iu&ictx=1&fir=1B1KRQ2dzU9fiM%253A%252CVSyhvwBYStC_GM%252C_&usg=AI4_-kTwhzlwiLG6pTrSMm7BmbktMpYu-w&sa=X&ved=2ahUKEwj4vIDG0avgAhWLp48KHc6DDPUQ9QEwBnoECAYQBA#imgrc=Qs_GgINTG3wdYM:

https://abuthalib.wordpress.com/2018/04/22/

http://akhirmh.blogspot.com/2016/05/bag-6-sejarah-tapanuli-sejarah-pers.html

http://poestahadepok.blogspot.com/2019/02/sejarah-kota-palembang-1-asal-usul.html
https://www.dbnl.org/tekst/oltm003bung01_01/oltm003bung01_01_0001.php

https://www.delpher.nl/nl/boeken/view?identifier=MMKB06%3A000002563%3A00007&cql%5B%5D=%28title+exact+%22Gedenkboek+vereeniging+Himpoenan+Soedara+1906-1936%22%29&coll=boeken

https://media.neliti.com/media/publications/12251-ID-beberapa-aspek-kekerabatan-pada-masyarakat-karo.pdf

http://eng.kppu.go.id/newkppu/wp-content/uploads/Final-Textbook-Hukum-Persaingan-Usaha-KPPU-2nd-Ed-4-January-2018.pdf

http://hortikultura.litbang.pertanian.go.id/downloads/Prosiding%20BUKU%201.pdf

http://fliphtml5.com/homepage/hairk
https://www.crc.uri.edu/download/Journal_Pesisir_Lautan_Vol1_2.pdf