Cita APA

Bert, P. (1886). First steps in scientific knowledge. Philadelphia: J.B. Lippincott Company.

Citación estilo Chicago

Bert, Paul. First Steps in Scientific Knowledge. Philadelphia: J.B. Lippincott Company, 1886.

Cita MLA

Bert, Paul. First Steps in Scientific Knowledge. Philadelphia: J.B. Lippincott Company, 1886.

Precaución: Estas citas no son 100% exactas.