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Bluemle, J. P. 1977. The face of North Dakota. The geologic story. N.D. Geol. 
     Surv. Ed. Ser. 11. 73 pp.

Emlen, J.T. 1971. Population densities of birds derived from transect counts. Auk 
     88: 323-342.

Emlen, J.T. 1977. Estimating breeding season bird densities from transect counts. 
     Auk 94: 455-468.

Faanes, C.A. 1982. Avian use of Sheyenne Lake and associated habitats in central 
     North Dakota. U.S. Fish Wildl. Serv. Resour. Publ. 144. 24 pp.

Faanes, C.A. and R.E. Stewart. 1982. Revised checklist of North Dakota birds. 
     Prairie Nat. 14: 81-92.

James, F.C. and H.H. Shugart. 1970. A quantitative method of habitat description. 
     Audubon Field Notes 24: 727-736.

Noble, D.L., A.J. Bjugstad and D.W. Ursek. 1980. Stand structure description and 
     habitat classification - a study guide for eastern Montana, North Dakota 
     and northwestern South Dakota. Unpubl. Off. Rep. U.S. For. Serv., Rapid 
     City, SD. 29 pp.

Noon, B.R. 1981. Techniques for sampling avian habitats. Pp. 42-52 in D.E. 
     Capen (ed.). The Use of Multivariate Statistics in Studies of Wildlife 
     Habitat. U.S. For. Serv. Gen. Tech. Rep. RM-87.

Stewart, R. E. 1975. Breeding birds North Dakota. Tri-College Center, Fargo. 
     295 pp.

Whitman, W.C. 1962. Vegetation of North Dakota. Pp. 37-61 in T. Dietrich and J. 
     Hove (eds.). Conservation of Natural Resources in North Dakota. N.D. State 
     Univ., Fargo.