APA (7th ed.) Citation

Powell, D., & Monahan, P. (1987). Advanced marker techniques. Macdonald Orbis.

Chicago Style (17th ed.) Citation

Powell, Dick, and Patricia Monahan. Advanced Marker Techniques. London: Macdonald Orbis, 1987.

MLA (9th ed.) Citation

Powell, Dick, and Patricia Monahan. Advanced Marker Techniques. Macdonald Orbis, 1987.

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