Παραπομπή APA

Seward, A. C. (1966). Plant life through the ages: Geological and botanical retrospect. Hafner Pub. Co..

Παραπομπή Chicago Style

Seward, A. C. Plant Life Through the Ages: Geological and Botanical Retrospect. Hafner Pub. Co., 1966.

Παραπομπή MLA

Seward, A. C. Plant Life Through the Ages: Geological and Botanical Retrospect. Hafner Pub. Co., 1966.

Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.