APA Style
Heilbroner, R., Singer, A. (1999).
The Economie Transformation of America 1600 to the Present, 4th.Ed. (4).
New York:
Harcourt Brace.
MLA Style
Heilbroner, Robert., Singer, Aaron.
"The Economie Transformation of America 1600 to the Present, 4th.Ed.".
4
New York:
Harcourt Brace,
1999.
Text.