APA aipamena

Untermann, R. K. (1978). Principles and practices of grading, drainage and road alignment. Reston Publishing Company Inc.

Chicago Style aipamena

Untermann, R K. Principles and Practices of Grading, Drainage and Road Alignment. Wirginia: Reston Publishing Company Inc, 1978.

MLA aipamena

Untermann, R K. Principles and Practices of Grading, Drainage and Road Alignment. Reston Publishing Company Inc, 1978.