APA (7th ed.) Citation

Markham, C. (1994). The command instrument rating: A complete guide to the theory ([6th] amended ed.). C.S. Markham.

Chicago Style (17th ed.) Citation

Markham, Chris. The Command Instrument Rating: A Complete Guide to the Theory. [6th] amended ed. Leanyer, N.T.: C.S. Markham, 1994.

MLA (8th ed.) Citation

Markham, Chris. The Command Instrument Rating: A Complete Guide to the Theory. [6th] amended ed. C.S. Markham, 1994.