APA引文

Discovery Education (Firm) & Discovery Communications, Inc. (2008). NASA at 50. Discovery Communications.

Chicago Style (17th ed.) Citation

Discovery Education (Firm) and Inc Discovery Communications. NASA at 50. Silver Spring, MD: Discovery Communications, 2008.

MLA引文

Discovery Education (Firm) and Inc Discovery Communications. NASA at 50. Discovery Communications, 2008.

警告：這些引文格式不一定是100％准確.