APA
Scalf M. R., McNabb J. F., Dunlap W. J., Cosby R. L., Fryberger J. S. &. (1987). Manual of Ground Water Quality Sampling Procedures. Jodhpur: Scientific Publishers.
Chicago
Scalf Marian R, McNabb James F, Dunlap Williams J, Cosby Roger L, Fryberger John S and. 1987. Manual of Ground Water Quality Sampling Procedures. Jodhpur: Scientific Publishers.
Harvard
Scalf M. R., McNabb J. F., Dunlap W. J., Cosby R. L., Fryberger J. S. and. (1987). Manual of Ground Water Quality Sampling Procedures. Jodhpur: Scientific Publishers.
MLA
Scalf Marian R, McNabb James F, Dunlap Williams J, Cosby Roger L, Fryberger John S and. Manual of Ground Water Quality Sampling Procedures. Jodhpur: Scientific Publishers. 1987.