Παραπομπή APA

Jensen, C., & Anderson, L. (1992). Pal for paradox 4 made easy. Osborne McGraw Hill.

Παραπομπή Chicago Style

Jensen, Cary, και Loy Anderson. Pal for Paradox 4 Made Easy. California: Osborne McGraw Hill, 1992.

Παραπομπή MLA

Jensen, Cary, και Loy Anderson. Pal for Paradox 4 Made Easy. Osborne McGraw Hill, 1992.