This paper investigates the relationships between bank credit and trade credit with profit of 130 agricultural firms listed on Vietnam’s stock exchanges during the period 2008-2014. Using the GMM approach, the paper reveals inverted-U shaped (∩) relationships between bank credit and trade credit with profit. Specifically, the optimal threshold of bank credit and trade credit to total assets of the firms are 0.4173 and 0.2425, respectively. The findings mean that if the ratio of bank credit to total assets exceeds the benchmark of 0.4173, firms should consider restructuring debts to get them back to the benchmark. To do so, firms should withdraw from those business fields that are not of their profession, in addition to liquiditizing unused assets to repay debts and not using short-term credit to invest in long-term projects. Firms may use trade credit wisely when other sources of finance are lacking. In concrete terms, firms can increase trade credit use if the ratio of trade credit to total assets is below 0.2425. Yet, if this ratio goes beyond this benchmark, firms should get back to this benchmark, e.g., keeping a suitable amount of inventory. The implications of this study is to boost firm growth in the proposed way.

Abstract
1. Introduction
2. Literature Review
    2.1. Bank Credit and Firm Growth
    2.2. Trade Credit and Firm Growth
    2.3. Joint Impact of Bank Credit and Trade Crediton Firm Growth
3. Empirical Model
4. Data and Estimation Strategy
5. Overview of the Surveyed Firms
6. Estimation Results
7. Conclusion and Recommendations
    7.1. Conclusion
    7.2. Recommendations
References

• Ninh Khuong LE(Department of Economics, College of Economics, Can Tho University, Vietnam) Corresponding Author
• Anh Tuan BUI(Deparment of Inspection, Can Tho City,Vietnam.)
• Tu Anh PHAN(Department of International Business, College of Economics, Can Tho University, Vietnam.)