When citing external resources in Week 1 materials, what must accompany the citation?

• A. A link only
• B. A date only
• C. A proper reference and version date
• D. A short note

Answer: (C)

When you cite external resources in Week 1 materials, you must include a proper reference and the version date. A proper reference gives enough information to locate and verify the source—author, title, publication or site, date, and where you found it (URL or repository). The version date specifies exactly which version of the resource you used, which is essential because online materials can change over time; knowing the version date keeps your work reproducible and lets others see the same content you relied on. A link alone doesn’t provide the full bibliographic details or boundary for what was cited, a date alone doesn’t identify the source, and a short note lacks formal citation and version information, making verification and traceability difficult.