Gaya APA

Hagen, A, -, P. et al (1994). Evaluation of Long-Term Asphalt Pavement Performance on Norwegian Airfields . England: Federal Highway Administration.

Gaya MLA

Hagen, Arnold, -, P. et al. "Evaluation of Long-Term Asphalt Pavement Performance on Norwegian Airfields". England: Federal Highway Administration, 1994. Text.