APA引文

National Science Teachers Association & ebrary, Inc. (2001). Dig in!: Hands-on soil investigations. NSTA Press.

Chicago Style (17th ed.) Citation

National Science Teachers Association and Inc ebrary. Dig in!: Hands-on Soil Investigations. Arlington, Va.: NSTA Press, 2001.

MLA引文

National Science Teachers Association and Inc ebrary. Dig in!: Hands-on Soil Investigations. NSTA Press, 2001.