APA-Zitierstil (7. Ausg.)

Sterk, A. A., & Wijnands, D. O. (1970). On the variation in the flower heads of Aster tripolium L. in the Netherlands ([Sonderdr.].).

Chicago-Zitierstil (17. Ausg.)

Sterk, Adri A., und Dirk Onno Wijnands. On the Variation in the Flower Heads of Aster Tripolium L. in the Netherlands. [Sonderdr.]. 1970.

MLA-Zitierstil (9. Ausg.)

Sterk, Adri A., und Dirk Onno Wijnands. On the Variation in the Flower Heads of Aster Tripolium L. in the Netherlands. [Sonderdr.]. 1970.