APA (7th ed.) Citation

Halttunen, P. K. (1974). The voluntary control in human breathing. [publisher not identified].

Chicago Style (17th ed.) Citation

Halttunen, Pekka Kaarlo. The Voluntary Control in Human Breathing. Helsinki: [publisher not identified], 1974.

MLA (9th ed.) Citation

Halttunen, Pekka Kaarlo. The Voluntary Control in Human Breathing. [publisher not identified], 1974.