APA Style

Untermann, R, K. (1978). Princeples And Practices Of Grading, Drainage And Road Alignment An Ecologic Approach (cet. 1). Reston Virginia: Reston Publishing Company.

MLA Style

Untermann, Richard, K.. "Princeples And Practices Of Grading, Drainage And Road Alignment An Ecologic Approach". cet. 1 Reston Virginia: Reston Publishing Company, 1978. Text.