APA

Hellan K., . (1984). Introduction to fracture mechanics. New York [u.a.]: McGraw-Hill.

Chicago

Hellan Kåre, . 1984. Introduction to fracture mechanics. New York [u.a.]: McGraw-Hill.

Harvard

Hellan K., . (1984). Introduction to fracture mechanics. New York [u.a.]: McGraw-Hill.

MLA

Hellan Kåre, . Introduction to fracture mechanics. New York [u.a.]: McGraw-Hill. 1984.