APA استشهاد

Cushing, D. . H. Uses of echo sounding for fishermen. Her Majesty stationery office.

استشهاد بنمط شيكاغو

Cushing, D H. Uses of Echo Sounding for Fishermen. London: Her Majesty stationery office.

MLA استشهاد

Cushing, D H. Uses of Echo Sounding for Fishermen. Her Majesty stationery office.