Underground Music Metal: HISTORY of HEAVY METAL
The Badass Metallica Trivia Book: Uncover The Epic
Buy Metal Downunder (A History of Australian Heavy Metal), Part 3
Underground music - Wikipedia
5 amazing underground metal bands
Heavy Metal History - Origins, Influences, and Evolution of a
Heavy metal music - Wikipedia
Raising hell: The beginner's guide to Norwegian black metal
The History of Heavy Metal (1968 - 2023)
Metal Down Under - A History Of Australian Heavy Metal [DVD] [2014
Best Death Metal Bands: 20 Essential Groups
The History of Heavy Metal Music & The Metal Subculture
Top 90 Hard Rock + Metal Albums of the '90s