APA (7th ed.) Citation

Romero, R. R. (1990). Machinery repairman 3 & 2 (1990 ed., May 1990.). The Activity.

Chicago Style (17th ed.) Citation

Romero, Rey R. Machinery Repairman 3 & 2. 1990 ed., May 1990. [Pensacola, Fla.]: The Activity, 1990.

MLA (9th ed.) Citation

Romero, Rey R. Machinery Repairman 3 & 2. 1990 ed., May 1990. The Activity, 1990.