APA Style
Tubman, H. (2006).
Secret Agent : How Daring Slaves And Free Blacks Spied For The Union During The Civil War .
USA:
Scholastic.
MLA Style
Tubman, Harriet.
"Secret Agent : How Daring Slaves And Free Blacks Spied For The Union During The Civil War".
USA:
Scholastic,
2006.
Printed Book.