Schlemmer, P., Schlemmer, D., & Pernu, C. (1999). Challenging projects for creative minds: 12 self-directed enrichment projects that develop and showcase student ability for grades 1 to 5. Free Spirit Pub.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रSchlemmer, Phil, Dori Schlemmer, और Caryn Pernu. Challenging Projects for Creative Minds: 12 Self-directed Enrichment Projects That Develop and Showcase Student Ability for Grades 1 to 5. Minneapolis, Minn: Free Spirit Pub, 1999.
एमएलए (9वां संस्करण) प्रशस्ति पत्रSchlemmer, Phil, et al. Challenging Projects for Creative Minds: 12 Self-directed Enrichment Projects That Develop and Showcase Student Ability for Grades 1 to 5. Free Spirit Pub, 1999.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.