Gaya APA
1932, H., G., W., 1926, H., J., G. (1989).
Environmental science and engineering / Glynn Henry, Gery W. Heinke .
Englewood Cliffs N.J.:
Prentice Hall.
Gaya MLA
Heinke, Gary,, W.,, 1932., 1926, Henry, J., Glynn,.
"Environmental science and engineering / Glynn Henry, Gery W. Heinke".
Englewood Cliffs N.J.:
Prentice Hall,
1989.
Textbook.