Gaya APA
Graves, Philip E, Krumm. Ronald J. (1981).
Health and Air Quality Evaluating the Effects of Policy .
Washington:
American Enterprise Institute for Public Policy Research.
Gaya Chicago
Graves, Philip E, Krumm. Ronald J.
Health and Air Quality Evaluating the Effects of Policy.
Washington:
American Enterprise Institute for Public Policy Research,
1981.
.
Gaya MLA
Graves, Philip E, Krumm. Ronald J.
Health and Air Quality Evaluating the Effects of Policy.
Washington:
American Enterprise Institute for Public Policy Research,
1981.
.
Gaya Turabian
Graves, Philip E, Krumm. Ronald J.
Health and Air Quality Evaluating the Effects of Policy.
Washington:
American Enterprise Institute for Public Policy Research,
1981.
.