Format: 

Lastname, Firstname. "Title of Article." Title of Journal volume, number, Month Year, Page(s). Database Name or Title of Non-Publisher Website, DOI or URL.

Lastname, Firstname. "Title of Article." Title of Journal volume, number, Month Year, Page(s), URL or DOI (when accessed from the publisher's website).

Lastname, Firstname. "Title of Article." Title of Journal volume, number, Month Year, Page(s).

Examples: 

Sikdar, Subhas K. "Measuring Sustainability." Clean Technologies and Environmental Policy, vol. 4, no. 2, Apr. 2012, pp. 153-54. SpringerLink, doi.10.1007/s10098-012-0479-0.

In-text: (Sikdar 153)

Notes: 

For electronic sources you should provide a DOI (Digital Object Identifier) if available; otherwise, provide the direct URL for the item, but omit the http:// or https:// (MLA 110). If you are accessing a journal article directly from the publisher's website, provide the URL immediately after the page numbers for the article preceded by a comma. If the journal is published only online without page numbers, use the URL in place of the page numbers, but omit the http:// or https:// (MLA 110).

Source:
MLA - pp. 21, 32, 48