This element cites an information source from which the organ specification was compiled.

Organ

Name	How Many	Description
Remark	(zero or more)	remarks about this Source.

article

The title of the article (for periodicals).

artist

The name of the recording artist.

author

The name of the author, or the person who examined the instrument.

date

The date of publication, or the date on which the instrument was examined. (See date formats.)

isbn

The ISBN number of the book.

issue

For periodicals, the issue identifier.

page

The page number(s). Multiple pages and page ranges are allowed.

publisher

The publisher.

title

The title of the source. For articles, the this is the name of the periodical; the title of the article goes in the article attribute.

type   (required)

The type of source. The value of this source must be one of the following:

book
other
pamphlet
periodical
personal	indicates that the author personally examined the instrument.
recording	liner notes from an audio or video recording.
web	a page or site on the World Wide Web.

url

For web sources, the URL.

<Source type="book" author="Barnes" title="The Contemporary American Organ"
    publisher="J. Fischer & Bro." date="1971" page="123"> </Source>
<Source type="recording" title="Organ Music of Louis Vierne and Charles Tournemire"
    artist="Ted A. Gibboney" publisher="Pro Organo" date="1993"</Source>
<Source type="pamphlet" title="The Organs of Christ Church Cathedral"</Source>
<Source type="periodical" title="The American Organist" date="5/1998"</Source>
<Source type="web" url="http://www.acmeorgans.com/specs/opus1.html"</Source>
<Source type="personal" author="Ed Stauff" date="11/19/2002"</Source>

<!ELEMENT Source (
	Remark )* >
<!ATTLIST Source
	article CDATA ""
	artist CDATA ""
	author CDATA ""
	date CDATA ""
	isbn CDATA ""
	issue CDATA ""
	page CDATA ""
	publisher CDATA ""
	title CDATA ""
	type (book|other|pamphlet|periodical|personal|recording|web) #REQUIRED
	url CDATA ""
	>