APA (7th ed.) Citation

Eastman, N. (1984). Underwater communication: Hand signal for scuba divers (2nd ed.). Princeton Book.

Chicago Style (17th ed.) Citation

Eastman, Norris. Underwater Communication: Hand Signal for Scuba Divers. 2nd ed. Princeton: Princeton Book, 1984.

MLA (9th ed.) Citation

Eastman, Norris. Underwater Communication: Hand Signal for Scuba Divers. 2nd ed. Princeton Book, 1984.

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