Cita APA (7a ed.)

Kondratiev, N. D. (1978). The long waves in economic life. [s.n.].

Cita Chicago Style (17a ed.)

Kondratiev, N. D. The Long Waves in Economic Life. [S.l.]: [s.n.], 1978.

Cita MLA (9a ed.)

Kondratiev, N. D. The Long Waves in Economic Life. [s.n.], 1978.