APA (7th ed.) Citation

Johansen, I. E. The upside down freezing test - a new method to evaluate frost hardiness. CABI.

Chicago Style (17th ed.) Citation

Johansen, I. Engstrøm. The Upside Down Freezing Test - a New Method to Evaluate Frost Hardiness. CABI.

MLA (9th ed.) Citation

Johansen, I. Engstrøm. The Upside Down Freezing Test - a New Method to Evaluate Frost Hardiness. CABI.

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