APA aipamena

United States. Library of Congress. (1990). Library of Congress classification schedules combined with additions and changes through 1989: Class P, subclasses PN, PR, PS, PZ literature (general); English and American literatures; fiction in English; jouvenile belles lettres. Gale Research.

Chicago Style aipamena

United States. Library of Congress. Library of Congress Classification Schedules Combined with Additions and Changes Through 1989: Class P, Subclasses PN, PR, PS, PZ Literature (general); English and American Literatures; Fiction in English; Jouvenile Belles Lettres. Detroit: Gale Research, 1990.

MLA aipamena

United States. Library of Congress. Library of Congress Classification Schedules Combined with Additions and Changes Through 1989: Class P, Subclasses PN, PR, PS, PZ Literature (general); English and American Literatures; Fiction in English; Jouvenile Belles Lettres. Gale Research, 1990.