[without author], Longest Symphony, [in:] Guinness World Records, [online] http://www.guinnessworldrecords.com/world-records/longest-symphony/.
[without author], Mushrooms (Acoustic Diffusers): 85 Fibreglass Saucers which Hang from the Auditorium Ceiling, [online] https://www.royalalberthall.com/about-the-hall/our-history/explore-our-history/building/acoustic-diffusers-mushrooms/.
[without author], Symphony No.1 (Brian, Havergal), [in:] IMSLP: Petrucci Music Library, [online] http://imslp.org/wiki/Symphony_No.1_(Brian%2C_Havergal).
Brian H., Gustav Mahler’s Eighth Symphony, “Musical Opinion”, March 1930.
Brian H., How the “Gothic Symphony” Came to Be Written, “The Modern Mystic and Monthly Science Review” 2 (1938), No. 11.
Brown D.J., Mounting the “Gothic”: The Schmidt Performance, 1980, [online] http://www.havergalbrian.org/sym1_2.htm.
Brown D.J., Recording “The Gothic” in Bratislava, [online] http://www.havergalbrian.org/recordinggothic.htm.
Cox T., What Is Wrong with London’s Concert Halls, [in:] The Sound Blog: Dispatches from Acoustic and Audio Engineering, 9.03.2005, [online] https://acousticengineering.wordpress.com/2015/03/09/ what-is-wrong-with-londons-concert-halls/.
Eastough K., Havergal Brian: The Making of the Composer, London 1976.
MacDonald M., Brian As Faust, [online] http://www.havergalbrian.org/articles/sym1_12.php.
Schaarwächter J., Beethoven, Berlioz, Brian (or Three Bs and More): Influences on One British Symphony and Beyond, [online] http:// www.havergalbrian.org/articles/threebs.php.
The Havergal Brian Society, Symphony 1: The Gothic, [online] http://www.havergalbrian.org/works/symphony-1.php.
Wiśnios J., Brian Havergal, [in:] Encyklopedia muzyczna PWM. Część biograficzna. Suplement, E. Dziębowska (ed.), Vol. 1 (AB), Kraków 1998.