Final answer:
Various tax sources are classified using the provided legend; primary and secondary designations depend on their authoritative impact and direct influence on tax law and policy.
Step-by-step explanation:
Using the legend provided, we can classify each of the following tax sources as follows:
- Tax treaty between the United States and India: B (Both a primary and secondary source as it directly affects tax obligations between the two countries)
- Revenue Procedure: P (Primary tax source since it is an official statement of a procedure by the IRS)
- An IRS publication: S (Secondary tax source because it provides explanations but is not authoritative)
- U.S. District Court decision: P (Primary tax source as it represents primary legal precedent)
- Yale Law Journal article: N (Neither, as it's scholarly discussion and not a recognized tax source)
- Temporary Regulations (issued 2019): P (Primary tax source, as they are authoritative for the duration of their effectiveness)
- U.S. Tax Court Memorandum decision: P (Primary tax source, as it includes decisions that may be cited as precedent)
- Small Cases Division of the U.S. Tax Court decision: S (Secondary tax source, as decisions here are not precedential)
- House Ways and Means Committee report: S (Secondary tax source, offers insight into legislative intent but not authoritative)
Notice: S (Secondary tax source, they provide guidance and clarification of official positions)