Must add an APA heading $($Level $1$ or Level $2)$ for each one of the topics discussed in the research paper as shown:

Introduction $($APA Level $1)$

Samsung$$s Principle Goods and Services $($APA Level $1)$

Global Market Share $($APA Level $1)$

Geographic Locations $($APA Level $1)$

Major Competitors $($APA Level $1)$

Activity Based Costing $($ABC$)($APA Level $1)$

Production Costs of Cellphones $($APA Level $2)$

Samsung's New Challenge: Cellphones Rising Component Costs $($APA Level $2)$

Standard Cost System $($APA Level $1)$

Cost$-$Plus Concepts $($APA Level $1)$

Samsung$$s Future Plans $($APA Level $1)$