100 A1 : : a bulletin published by Lloyd's Register of Shipping.

MLA

100 A1 : a Bulletin Published by Lloyd's Register of Shipping. London: Lloyd's Register of Shipping, 1958.

APA

(1958). 100 A1 : a bulletin published by Lloyd's Register of Shipping. London: Lloyd's Register of Shipping.

Chicago

100 A1: A Bulletin Published by Lloyd's Register of Shipping. London: Lloyd's Register of Shipping, 1958.