APA (7th ed.) Citation

Lützke, R., & Heinsdorf, D. (1991). Die Kiefer (Pinus sylvestris).

Chicago Style (17th ed.) Citation

Lützke, Rudolf, and Dieter Heinsdorf. Die Kiefer (Pinus Sylvestris). Eberswalde-Finow, 1991.

MLA (9th ed.) Citation

Lützke, Rudolf, and Dieter Heinsdorf. Die Kiefer (Pinus Sylvestris). 1991.

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