Identify the correct CMOS formatting for an in-text citation referring to multiple sources.
a. Use multiple-numbered citations after the source material, in order to indicate multiple sources.
b. Do not use a single in-text citation to refer to multiple sources.
c. Use a single-numbered citation after the source material, even when referring to multiple sources.
d. It is sufficient to cite one source, even if the material appears in multiple sources.
a. Use multiple-numbered citations after the source material, in order to indicate multiple sources.
b. Do not use a single in-text citation to refer to multiple sources.
c. Use a single-numbered citation after the source material, even when referring to multiple sources.
d. It is sufficient to cite one source, even if the material appears in multiple sources.