meat
Mango
The most reliable source of vitamin B-12 for vegans is fortified foods or supplements specifically designed for vegans, as plant-based foods do not naturally contain sufficient amounts of vitamin B-12.
magnesium, vitamin A, and Vitamin D
The most reliable source to get information on a safe weight controlling diet during pregnancy would be to talk to your doctor or to speak with a nutritionist.
It's not the most reliable source.
Vitamin A, Vitamin D..protein, not too much cholesterol
Vitamin A, Vitamin D..protein, not too much cholesterol
sunlight
The water provided by one's city or region is the most reliable source of dietary flouride.
The most reliable source for a 240 wiring diagram is the manufacturer's official website or manual.
The internet is not the most reliable but sometimes the only source, as some information can only be found there.
Everybody knows, the most reliable source of information if the AnswersWiki of Answers.com. Or reading from goats intestines ...