APA

Harker A. H., Harker A. H. & British Gas Plc. (1988). Elastic waves in solids. Bristol [u.a.]: Hilger, in association with British Gas.

Chicago

Harker Anthony H, Harker Anthony Henry and British Gas Plc. 1988. Elastic waves in solids. Bristol [u.a.]: Hilger, in association with British Gas.

Harvard

Harker A. H., Harker A. H. and British Gas Plc. (1988). Elastic waves in solids. Bristol [u.a.]: Hilger, in association with British Gas.

MLA

Harker Anthony H, Harker Anthony Henry and British Gas Plc. Elastic waves in solids. Bristol [u.a.]: Hilger, in association with British Gas. 1988.