Nevada Revised Statutes Title 52. Trade Regulations and Practices § 598.762. Requirements of contract for purchase of services; copy of contract must be retained by organization

(a) Must be in writing;

(b) Must be signed by the buyer;

(c) Must be dated; and

(d) Must clearly indicate above the signature line that the buyer may cancel the contract within 5 days after its execution by giving written notice to the organization of his or her intent to cancel the contract. If the notice is mailed, it must be postmarked not later than 5 days after the execution of the contract.