APA (7th ed.) Citation

Donaldson, G. (1966). Northwards by sea / by G. Donaldson. [n. pub].

Chicago Style (17th ed.) Citation

Donaldson, G. Northwards by Sea / by G. Donaldson. [n. pub], 1966.

MLA (9th ed.) Citation

Donaldson, G. Northwards by Sea / by G. Donaldson. [n. pub], 1966.

Warning: These citations may not always be 100% accurate.