One would add first names if there were multiple authors mentioned with the same surname. If there are many more authors one would add "et al." inside of the parentheses. If the name of the author is unknown then one would add the title of the work which is being cited.
She became the first female, in Justice of the Supreme Court
Answer:
Color
Explanation:
Thats how everyone spells it.
The consequences of not giving credit to the source from which materials are taken from are considered plagiarism.