APA (7th ed.) Citation

Frye, M. M. (1985). An investigation of internship programs at environmental centers in Pennsylvania. [publisher not identified].

Chicago Style (17th ed.) Citation

Frye, Mardi Mitchell. An Investigation of Internship Programs at Environmental Centers in Pennsylvania. [Place of publication not identified]: [publisher not identified], 1985.

MLA (9th ed.) Citation

Frye, Mardi Mitchell. An Investigation of Internship Programs at Environmental Centers in Pennsylvania. [publisher not identified], 1985.