APA (7th ed.) Citation

Pacyna, G., & Zdebska, D. (2010). Upper carboniferous seed fern (Pteridospermophyta) pollen organs from Silesia (Poland) and related evolution considerations. Polskie Towarzystwo Botaniczne.

Chicago Style (17th ed.) Citation

Pacyna, Grzegorz, and Danuta Zdebska. Upper Carboniferous Seed Fern (Pteridospermophyta) Pollen Organs from Silesia (Poland) and Related Evolution Considerations. Łódź: Polskie Towarzystwo Botaniczne, 2010.

MLA (9th ed.) Citation

Pacyna, Grzegorz, and Danuta Zdebska. Upper Carboniferous Seed Fern (Pteridospermophyta) Pollen Organs from Silesia (Poland) and Related Evolution Considerations. Polskie Towarzystwo Botaniczne, 2010.