APA Style
PIETRIS, Mary K.D.. (1980).
Library of congress subject headings volume 1-2 (9th ed).
Washington:
Library of Congress.
Chicago Style
PIETRIS, Mary K.D..
Library of congress subject headings volume 1-2.
9th ed
Washington:
Library of Congress,
1980.
Text.
MLA Style
PIETRIS, Mary K.D..
Library of congress subject headings volume 1-2.
9th ed
Washington:
Library of Congress,
1980.
Text.
Turabian Style
PIETRIS, Mary K.D..
Library of congress subject headings volume 1-2.
9th ed
Washington:
Library of Congress,
1980.
Print.