The following formula is involved in the calculation of cash and marketable securities to total current liabilities ratios:

Cash & marketable securities to current liabilities:
where C is a company's cash balance, MS is the value of the company's marketable securities, and TCL is the company's total current liabilities.

The following references can be used to cite this cash and marketable securities to total current liabilities calculator:
 Soper, D.S. (2017) "Cash and Marketable Securities to Total Current Liabilities Calculator (Online Software)", http://www.danielsoper.com/fincalc. 
 Bragg, S. (2012). "Business Ratios and Formulas: A Comprehensive Guide", Hoboken, NJ: John Wiley & Sons. 