Follow the money, part I and part II :
hearings before the Subcommittee on Investigations and Oversight, Committee on Science and Technology, One Hundred Eleventh Congress, first session, March 19, 2009 and May 5, 2009.

APA Citation

United States. Congress. House. Committee on Science and Technology (2007). Subcommittee on Investigations and Oversight. (2009). Follow the money, part I and part II: hearings before the Subcommittee on Investigations and Oversight, Committee on Science and Technology, One Hundred Eleventh Congress, first session, March 19, 2009 and May 5, 2009. Washington: U.S. G.P.O. .

MLA Citation

United States. Congress. House. Committee on Science and Technology (2007). Subcommittee on Investigations and Oversight. Follow the Money, Part I And Part II: Hearings Before the Subcommittee On Investigations And Oversight, Committee On Science And Technology, One Hundred Eleventh Congress, First Session, March 19, 2009 And May 5, 2009. Washington: U.S. G.P.O. , 2009.

Warning: These citations may not always be complete (especially for serials).