APA

(1991). Human exposure model-II: user's guide. Research Triangle Park, N.C: Office of Air Quality Planning and Standards.

Chicago

1991. Human exposure model-II: user's guide. Research Triangle Park, N.C: Office of Air Quality Planning and Standards.

Harvard

(1991). Human exposure model-II: user's guide. Research Triangle Park, N.C: Office of Air Quality Planning and Standards.

MLA

Human exposure model-II: user's guide. Research Triangle Park, N.C: Office of Air Quality Planning and Standards. 1991.