H.P. Drewry (Shipping Consultants) Limited. Research Division. (1974). Unitization of cargo in the deep-sea trades. H.P. Drewry (Shipping Consultants) Ltd.
Cita Chicago (17th ed.)H.P. Drewry (Shipping Consultants) Limited. Research Division. Unitization of Cargo in the Deep-sea Trades. London (1 Argyll St., W1V 1AD): H.P. Drewry (Shipping Consultants) Ltd, 1974.
Cita MLA (8th ed.)H.P. Drewry (Shipping Consultants) Limited. Research Division. Unitization of Cargo in the Deep-sea Trades. H.P. Drewry (Shipping Consultants) Ltd, 1974.
Atenció: Aquestes cites poden no estar 100% correctes.