Gaya APA

Freer-Hewish, R.J.. (1981). Effective Minor Drainage Design Overseas . : PTRC.

Gaya Chicago

Freer-Hewish, R.J.. Effective Minor Drainage Design Overseas. : PTRC, 1981. Filmstrip.

Gaya MLA

Freer-Hewish, R.J.. Effective Minor Drainage Design Overseas. : PTRC, 1981. Filmstrip.

Gaya Turabian

Freer-Hewish, R.J.. Effective Minor Drainage Design Overseas. : PTRC, 1981. Filmstrip.