Cita APA (7th ed.)

Heldt, H., & Piechulla, B. (2005). Plant biochemistry (3rd ed.). Elsevier.

Cita Chicago (17th ed.)

Heldt, Hans-Walter, i Birgit Piechulla. Plant Biochemistry. 3rd ed. New Delhi: Elsevier, 2005.

Cita MLA (9th ed.)

Heldt, Hans-Walter, i Birgit Piechulla. Plant Biochemistry. 3rd ed. Elsevier, 2005.