Always use a colon at the end of a phrase introducing a list. Hyphens are used to clarify or to form a single idea from two or more words. Other styles may be followed as long as the usage is consistent. Numbers Do not begin a sentence with a numeral. Spell it out or reword the sentence so that a number does not lead.
Units Always use SI units.
If needed, Imperial equivalents may be included in parentheses. If the equation does not fit onto one line it should be broken before the operational or relational symbol. Do not include punctuation after equations. The number should be placed on the same line as the equation, placed to the right-hand margin. Transliteration Please consult the system adopted by the AUC Library, which is the same as the system used by the Library of the Congress.