APA (7th ed.) Citation

Fishing News Books & Sedgwick, S. D. (1988). Salmon farming handbook. Fishing News Books.

Chicago Style (17th ed.) Citation

Fishing News Books and Stephen Drummond Sedgwick. Salmon Farming Handbook. England: Fishing News Books, 1988.

MLA (8th ed.) Citation

Fishing News Books and Stephen Drummond Sedgwick. Salmon Farming Handbook. Fishing News Books, 1988.