Gaya APA
L., Y., D. et al. (1988).
Study Guide for Use With Economics of Social Issues Eighth Edition (Eighth Edition).
Homewood:
BPI / Irwin.
Gaya MLA
L., Y., D. et al..
Study Guide for Use With Economics of Social Issues Eighth Edition.
Eighth Edition
Homewood:
BPI / Irwin,
1988.
Text.