Gaya APA

Heilbroner, R, L., Thurow, L, C. (1982). Economics explained . Englewood Cliffs, New Jersey: Prentice-Hall, Inc..

Gaya MLA

Heilbroner, Robert, L., Thurow, Lester, C.. "Economics explained". Englewood Cliffs, New Jersey: Prentice-Hall, Inc., 1982. Text.