Παραπομπή σε μορφή APA (7η εκδ.)

Sommerfeldt, H. A. (1861). Atlas to the elementary and practical principles of the Construction of ships. John Weale.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Sommerfeldt, Hakon A. Atlas to the Elementary and Practical Principles of the Construction of Ships. London: John Weale, 1861.

Παραπομπή σε μορφή MLA (9th εκδ.)

Sommerfeldt, Hakon A. Atlas to the Elementary and Practical Principles of the Construction of Ships. John Weale, 1861.