Gaya APA

MARSHALL, V., ROBBERTS, J, M. (). PRESTRESSED CONCRETE DESIGN AND PRACTICE . : Concrete Society of Southern Africa Prestressed Concrete Division Midrand, South Africa.

Gaya MLA

MARSHALL, VERNON., ROBBERTS, JOHN, M.. "PRESTRESSED CONCRETE DESIGN AND PRACTICE". : Concrete Society of Southern Africa Prestressed Concrete Division Midrand, South Africa, . Electronic Resource.