Παραπομπή APA

Leonards, G. A. (1962). Foundation Engineering. Mc Graw- Hill Book Company Inc.

Παραπομπή Chicago Style

Leonards, G A. Foundation Engineering. Newyork: Mc Graw- Hill Book Company Inc, 1962.

Παραπομπή MLA

Leonards, G A. Foundation Engineering. Mc Graw- Hill Book Company Inc, 1962.