Παραπομπή APA

Smith, G. (1989). Coastal navigation: :a programmed learning course (Ed.3.). Adlard coles nautical.

Παραπομπή Chicago Style

Smith, Gerry. Coastal Navigation: :a Programmed Learning Course. Ed.3. London: Adlard coles nautical, 1989.

Παραπομπή MLA

Smith, Gerry. Coastal Navigation: :a Programmed Learning Course. Ed.3. Adlard coles nautical, 1989.