APA (7th ed.) Citation

Little Mammoth Media (Firm). (2004). The big submarine. Little Mammoth Media.

Chicago Style (17th ed.) Citation

Little Mammoth Media (Firm). The Big Submarine. [S.l.]: Little Mammoth Media, 2004.

MLA (8th ed.) Citation

Little Mammoth Media (Firm). The Big Submarine. Little Mammoth Media, 2004.

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