توثيق جمعية علم النفس الأمريكية APA (الطبعة السابعة)

Pajooyan, J. (1982). The effect of congestion on demand for outdoor recreation: With the empirical analysis of cross country skiing. University Microfilms International.

توثيق أسلوب شيكاغو (الطبعة السابعة عشر)

Pajooyan, Jamshid. The Effect of Congestion on Demand for Outdoor Recreation: With the Empirical Analysis of Cross Country Skiing. Ann Arbor, Mich.: University Microfilms International, 1982.

توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)

Pajooyan, Jamshid. The Effect of Congestion on Demand for Outdoor Recreation: With the Empirical Analysis of Cross Country Skiing. University Microfilms International, 1982.