A. Except for retail service station invoices, motor fuel invoices shall:
(1) Contain the amount of Maryland motor fuel tax charged; or if the tax is not charged, the statement "Maryland motor fuel tax is not included";
(2) Contain the date of delivery;
(3) Contain the name and address of purchaser;
(4) Contain the name and address of seller pre-printed on the invoice;
(5) Contain the number of gallons;
(6) Be serially or sequentially numbered; and
(7) Contain the trade name and type of fuel.
B. Retail service station invoices shall include the statement "The seller certifies that the motor fuel tax will be paid as required by law."