APA

Belonus J., Slaybaugh N., Poister T. & Kilareski W. (1983). Analysis of the reliability of the trained observer survey. University Park, PA: Pennsylvania State University. Pennsylvania Transportation Institute. PTI report 8306.

Chicago

Belonus JM, Slaybaugh NL, Poister TH and Kilareski WP. 1983. Analysis of the reliability of the trained observer survey. University Park, PA: Pennsylvania State University. Pennsylvania Transportation Institute. PTI report 8306.

Harvard

Belonus J., Slaybaugh N., Poister T. and Kilareski W. (1983). Analysis of the reliability of the trained observer survey. University Park, PA: Pennsylvania State University. Pennsylvania Transportation Institute. PTI report 8306.

MLA

Belonus JM, Slaybaugh NL, Poister TH and Kilareski WP. Analysis of the reliability of the trained observer survey. University Park, PA: Pennsylvania State University. Pennsylvania Transportation Institute. PTI report 8306. 1983.