APA (7th ed.) Citation

Civic Education Service. (1967). Underwater world. [publisher not identified].

Chicago Style (17th ed.) Citation

Civic Education Service. Underwater World. Washington: [publisher not identified], 1967.

MLA (9th ed.) Citation

Civic Education Service. Underwater World. [publisher not identified], 1967.

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