APA

Howells H., Raithby K., . (1977). Static and repeated loading tests on lightweight prestressed concrete bridge beams. Crowthorne: Transport and Road Research Laboratory. Lab. report nr 804.

Chicago

Howells H, Raithby KD, . 1977. Static and repeated loading tests on lightweight prestressed concrete bridge beams. Crowthorne: Transport and Road Research Laboratory. Lab. report nr 804.

Harvard

Howells H., Raithby K., . (1977). Static and repeated loading tests on lightweight prestressed concrete bridge beams. Crowthorne: Transport and Road Research Laboratory. Lab. report nr 804.

MLA

Howells H, Raithby KD, . Static and repeated loading tests on lightweight prestressed concrete bridge beams. Crowthorne: Transport and Road Research Laboratory. Lab. report nr 804. 1977.