APA Format
Purdom, P. Walton . (). Environmental... : Air resources management, ( ket. lihat bab. 5 ) ( halaman 223-313 ). : New York : Academic Press, 1980
MLA Format
Purdom, P. Walton . Environmental... : Air resources management, ( ket. lihat bab. 5 ) ( halaman 223-313 ). : New York : Academic Press, 1980,
Australian/Harvard Format
Purdom, P. Walton . . Environmental... : Air resources management, ( ket. lihat bab. 5 ) ( halaman 223-313 ). New York : Academic Press, 1980, 
Warning: These citations may not always be 100% accurate.