Song Writer's Market (неопр.). — Writer's Digest Books, 1989. — С. 56. Архивировано 9 января 2015 года. «Published "You," (by Peter Sawatzki), recorded by Boytronic on Mercury Records (disco); and "Geil," (by Bruce Hammond), recorded by Bruce & Bongo on Rush Records (disco/dance). Tips: "Write good commercial pop."»
Song Writer's Market (неопр.). — Writer's Digest Books, 1989. — С. 56. Архивировано 9 января 2015 года. «Published "You," (by Peter Sawatzki), recorded by Boytronic on Mercury Records (disco); and "Geil," (by Bruce Hammond), recorded by Bruce & Bongo on Rush Records (disco/dance). Tips: "Write good commercial pop."»