Gaya APA
Bowker, R. (1971).
Subject Guide To Hardbounds, Paperbacks, Trade Books, Textbooks, Adult Books Juveniles... .
New York:
R.R Bowker Company.
Gaya MLA
Bowker, R.R..
"Subject Guide To Hardbounds, Paperbacks, Trade Books, Textbooks, Adult Books Juveniles...".
New York:
R.R Bowker Company,
1971.
Text.