APA (7th ed.) Citation

Saikkonen, P., & Lütkepohl, H. (1999). Testing for unit roots in time series with level shifts. Humboldt-Univ.

Chicago Style (17th ed.) Citation

Saikkonen, Pentti, and Helmut Lütkepohl. Testing for Unit Roots in Time Series with Level Shifts. Berlin: Humboldt-Univ, 1999.

MLA (9th ed.) Citation

Saikkonen, Pentti, and Helmut Lütkepohl. Testing for Unit Roots in Time Series with Level Shifts. Humboldt-Univ, 1999.