Gaya APA
Young, D, R. (1986).
American perspective, major trends in the United States trough the 1990s .
Boston:
Houghton Mifflin co.
Gaya MLA
Young, David, R.
"American perspective, major trends in the United States trough the 1990s".
Boston:
Houghton Mifflin co,
1986.
Printed Book.