Παραπομπή σε μορφή APA (7η εκδ.)

Schmieder, F. (2011). On the beginnings and early discussions of the metaphor 'Survival of the Fittest': Falko Schmieder. Contributions to the history of concepts.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Schmieder, Falko. "On the Beginnings and Early Discussions of the Metaphor 'Survival of the Fittest': Falko Schmieder." Contributions to the History of Concepts 2011.

Παραπομπή σε μορφή MLA (8th εκδ.)

Schmieder, Falko. "On the Beginnings and Early Discussions of the Metaphor 'Survival of the Fittest': Falko Schmieder." Contributions to the History of Concepts, 2011.