The Individuals with Disabilities Education Act of 1997 (IDEA 1997) and Individuals with Disabilities Education Improvement Act of 2004 (IDEA 2004) define specific learning disabilities in a similar manner. "The term "specific learning disability" means a disorder in one or more of the basic psychological processes involved in understanding or in using language, spoken or written, which disorder may manifest itself in [the] imperfect ability to listen, think, speak, read, write, spell, or do mathematical calculations. Such term includes such conditions as perceptual disabilities, brain injury, minimal brain dysfunction, dyslexia, and developmental aphasia. Such term does not include a learning problem that is primarily the result of visual, hearing, or motor disabilities, or mental retardation, or emotional disturbance, or of environmental, cultural, or economic disadvantage" (IDEA 1997, IDEA 2004). This bibliography is not intended to be exhaustive; rather, the references are a starting point for individuals interested in searching for additional information about learning disabilities (LD), specific learning disabilities (SLD), and responsiveness to intervention (RTI).