APA (7th ed.) Citation

Heap, N. (1993). An introduction to OSI (1. publ.). Blackwell Scientific Publ.

Chicago Style (17th ed.) Citation

Heap, Nicholas. An Introduction to OSI. 1. publ. Oxford u.a: Blackwell Scientific Publ, 1993.

MLA (9th ed.) Citation

Heap, Nicholas. An Introduction to OSI. 1. publ. Blackwell Scientific Publ, 1993.

Warning: These citations may not always be 100% accurate.