APA citiranje
Perkins, P. H. (1980). Concrete liquid retaining structures.
Chicago Style (17th ed.) Citation
Perkins, Philip Harold. Concrete Liquid Retaining Structures. 1980.
MLA citiranje
Perkins, Philip Harold. Concrete Liquid Retaining Structures. 1980.
Opozorilo: Ti citati niso vedno 100% točni.