APA (7th ed.) Citation

(1967). At the spring sea ice camp. Documentary Educational Resources (DER).

Chicago Style (17th ed.) Citation

At the Spring Sea Ice Camp. Watertown, MA: Documentary Educational Resources (DER), 1967.

MLA (9th ed.) Citation

At the Spring Sea Ice Camp. Documentary Educational Resources (DER), 1967.

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