APA

Shackel B., . (1980). Review of the technology of interlocking concrete block paving for roads and industrial pavements. Pretoria: National Institute for Transport and Road Research. Technical report RP/8/80.

Chicago

Shackel B, . 1980. Review of the technology of interlocking concrete block paving for roads and industrial pavements. Pretoria: National Institute for Transport and Road Research. Technical report RP/8/80.

Harvard

Shackel B., . (1980). Review of the technology of interlocking concrete block paving for roads and industrial pavements. Pretoria: National Institute for Transport and Road Research. Technical report RP/8/80.

MLA

Shackel B, . Review of the technology of interlocking concrete block paving for roads and industrial pavements. Pretoria: National Institute for Transport and Road Research. Technical report RP/8/80. 1980.