All Music Guide - A guide to recordings in every genre. Cross-indexed source of reviews, essays, and ratings; all available online, on in-store kiosks, and in print form. Uses submissions from readers.

Gramophone Classical Good CD Guide - Brief description of the guidebook to classical music.

Joel Whitburn's Record Research Books - Information from Billboard magazine's major charts with complete chart data on every recording ever charted. Short descriptions and sample pages from this large line of books.

Krause Publications - Publisher of several record and CD collecting related books, including price guides.

Muze - Longtime publisher (over 50 years) of directories of recorded music for retail stores; their data is now available for purchase to place on other websites and in-store kiosks.

Osborne Enterprises and Jellyroll Productions - Producer of price guides (in the "Official Price Guide" series) and reference books for music collectibles. General descriptions of each volume.

RecordResearcher.com - CD-ROM discography RockRom 10, and book Rock Record 7, with 500,000 records, over a million tracks and musicians. Free sofwared demo download.

Rough Guides - Summaries of over 20 music guidebook titles.

Trouser Press - Official site of Trouser Press magazine (1974-1984) and the Trouser Press Record Guides. Reviews and discographies from five editions of the guidebook.