Robert Burns, John Gibson Lockhart, James Currie (1835). “The works of Robert Burns: containing his life, by John Lockhart, esq. ; the poetry and correspondence of Dr. Currie's edition ; biographical sketches of the poet by himself, Gilbert Burns, Professor Stewart, and others”, p.216
"Daily routines of Nikola Tesla, Mozart, Hemingway, Woody Allen, Maya Angelou, van Gogh, Stephen King, and Nabokov" by Thomas Oppong, www.cnbc.com. February 7, 2017.
Samuel Rogers, Thomas Campbell, James Montgomery, Charles Lamb, Henry Kirke White (1830). “The poetical works of Rogers, Campbell, J. Montgomery, Lamb, and Kirke White: complete in one volume”, p.70